CN108632917A

CN108632917A - A kind of bearing mapping method, access network entity and SMF

Info

Publication number: CN108632917A
Application number: CN201710169739.9A
Authority: CN
Inventors: 王胡成
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-03-21
Filing date: 2017-03-21
Publication date: 2018-10-09
Anticipated expiration: 2037-03-21
Also published as: CN108632917B

Abstract

A kind of bearing mapping method of present invention offer, access network entity and SMF, the method includes：Access network entity receives the mapping relation information that the service quality QoS in the session that conversation management functional SMF is sent flows to evolved packet system EPS carryings；The mapping relation information that the access network entity is carried according to the QoS flow to EPS carries out the mapping of the radio access bearer E RAB of evolution.In such manner, it is possible to which effectively avoid the carrying of core-network side from mapping maps unmatched problem with access net side carrying.

Description

A kind of bearing mapping method, access network entity and SMF

Technical field

The present invention relates to field of communication technology, more particularly to a kind of bearing mapping method, access network entity and SMF (Session Management Function, conversation management functional).

Background technology

With the rapid development of mobile communication technology, future mobile communications network needs to support and LTE (Long Term Evolution, long term evolution) interoperability between network, to support UE (User Equipment, user terminal) next For the switching between network and LTE network.

In LTE network empty port load-supporting be in session EPS bearer (Evolved Packet System bearer, Evolved packet system carries) correspondingly, and the empty port load-supporting of next generation network is according to the QoS flow in session (Quality of Service flow, service quality stream) is autonomously generated, and is executing next generation network (such as 5G, the 5th Generation mobile communication) to LTE network switching when be susceptible to access net side empty port load-supporting The unmatched problem of carrying made of being mapped with core-network side, to be easy to cause in target BS, such as eNB (evolved Node B, evolved base station) on generate handoff error.

Invention content

The purpose of the present invention is to provide a kind of bearing mapping method, access network entity and SMF, to solve in 5G networks To LTE network switching when be susceptible to made of access net side empty port load-supporting and core-network side mapping and carry unmatched ask Topic.

In order to achieve the above object, the embodiment of the present invention provides a kind of bearing mapping method, the method includes：

Access network entity receives the service quality QoS in the session that conversation management functional SMF is sent and flows to evolution grouping system The mapping relation information that the EPS that unites is carried；

The mapping relation information that the access network entity is carried according to the QoS flow to EPS carries out the wireless access of evolution Carry the mapping of E-RAB.

Optionally, the mapping relation information that the access network entity is carried according to the QoS flow to EPS carries out evolution The mapping of radio access bearer E-RAB, including：

If the access network entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution, institute It states access network entity and the QoS flow or QoS flow correspondence is completed according to the mapping relation information that the QoS flow to EPS carries 5G RAB to E-RAB mapping.

Optionally, the access network entity receives the mapping relation information that the QoS flow that the SMF is sent is carried to EPS, packet It includes：

The activation QoS flow pair that the access network entity receives access and mobile management function to ps domain AMF or SMF are sent The request of the 5G RAB answered carries the mapping relation information of the QoS flow and EPS carryings in the request.

Optionally, the access network entity receives the corresponding 5G RAB's of the activation QoS flow that AMF or SMF is sent Request, including：

During session establishment, the access network entity receives the request for the activation 5G RAB that SMF is sent；Or

In service request procedure, what the access network entity reception SMF or AMF was sent can activate the QoS flow Request.

The embodiment of the present invention also provides a kind of bearing mapping method, the method includes：

When access network entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution, to session pipe It manages function SMF and sends request message, the request message flows to evolution grouping for asking the SMF to establish service quality QoS The mapping of system EPS carryings.

Optionally, it is held to E-RAB or EPS if carrying the QoS flow that the access network entity is established in the request message The mapping relation information of load, the request message are used to ask the SMF to be reflected according to what the QoS flow to E-RAB or EPS were carried Penetrate relation information conversate context to EPS bearer contexts mapping.

Optionally, it when the access network entity determination needs session being switched to E-UTRAN, sends and asks to the SMF Message, including：

If the access network entity determination needs session being switched to E-UTRAN, the access network entity reflects 5G RAB It penetrates as E-RAB, and according to QoS flow to the mapping relations of 5G RAB, determines the mapping relations that QoS flow is carried to E-RAB or EPS；

The access network entity sends the mapping relations for carrying the QoS flow and being carried to E-RAB or EPS to the SMF The request message of information.

Optionally, the method further includes：

The access network entity according to the relevant information of the E-RAB fill in source base station to target BS transparent vessel, And the first switching of the transparent vessel for carrying the source base station to target BS is sent to access and mobile management function to ps domain AMF Request message.

Optionally, when the access network entity determination needs session being switched to E-UTRAN, request message is sent to SMF, Including：

When the access network entity determination needs session being switched to E-UTRAN, to access and mobile management function to ps domain AMF Send the second switching request message；

The second switching request message is used to indicate the AMF and sends request message to the SMF, described for asking SMF establishes the mapping that QoS flow is carried to EPS, and returns to the QoS flow to the AMF or described access network entities and carried to EPS Mapping relation information.

When the access network entity determination needs session being switched to E-UTRAN, to access and mobile management function to ps domain AMF Send third switching request message, wherein the transparent vessel of source base station in the third switching request message to target BS It nullifies, and indicates that the transparent vessel is invalid.In this way, the target BS after receiving the transparent vessel, will neglect E-RAB information in the slightly described transparent vessel, and establish the E-RAB that eats dishes without rice or wine according to the UE that is designated as of MME in core net

Conversation management functional SMF sends the service quality QoS in session to access network entity and flows to evolved packet system EPS The mapping relation information of carrying, wherein it is real that the mapping relation information that the QoS flow to EPS carries is used to indicate the access net Body establishes the QoS flow or the QoS when determination needs for session to be switched to the land radio access web E-UTRAN of evolution Flow mappings of the corresponding 5G radio access bearer RAB to the radio access bearer E-RAB of evolution.

Optionally, the SMF sends the mapping relations letter that the QoS flow in session is carried to EPS to the access network entity Before the step of breath, the method further includes：

The SMF establishes the mapping relations that the QoS flow in session is carried to EPS.

Optionally, the SMF sends the QoS flow to the EPS mapping relation informations carried to the access network entity Before step, the method further includes：

The SMF receives the request message that the access network entity is sent, wherein the request message is the access net It is sent to the SMF when entity determination needs session being switched to E-UTRAN.

The embodiment of the present invention also provides a kind of access network entity, and the access network entity includes：

First receiving module flows to evolution for receiving the service quality QoS in the session that conversation management functional SMF is sent The mapping relation information of grouping system EPS carryings；

Mapping block, the mapping relation information for being carried according to the QoS flow to EPS, carries out the wireless access of evolution Carry the mapping of E-RAB.

Optionally, the mapping block, if determining the land for needing session being switched to evolution for the access network entity When ground wireless access network E-UTRAN, the mapping relation information carried according to the QoS flow to EPS completes the QoS flow or described The mapping of corresponding 5G RAB to the E-RAB of QoS flow.

Optionally, first receiving module, for receiving access and mobile management function to ps domain AMF or SMF transmission The request for activating the corresponding 5G RAB of the QoS flow, carries the QoS flow in the request and the mapping relations of EPS carryings are believed Breath.

Optionally, first receiving module, for during session establishment, receiving the activation 5G that SMF is sent The request of RAB；Or

For in service request procedure, receiving the request that can activate the QoS flow that SMF or AMF is sent.

First sending module, for determine need for session to be switched to the land radio access web E-UTRAN of evolution when, Request message is sent to conversation management functional SMF, the request message is flowed to for asking the SMF to establish service quality QoS The mapping of evolved packet system EPS carryings.

Optionally, first sending module includes：

Map unit, for if it is determined that need session being switched to E-UTRAN, 5G RAB to be mapped as E-RAB one by one, and According to QoS flow to the mapping relations of 5G RAB, the mapping relations that QoS flow is carried to EPS are determined；

Transmission unit, for carrying the QoS flow asking to the EPS mapping relation informations carried to SMF transmissions Seek message.

Optionally, the access network entity further includes：

Second sending module, the transparent appearance for filling in source base station to target BS according to the relevant information of the E-RAB Device, and send the first of the transparent vessel for carrying the source base station to target BS to access and mobile management function to ps domain AMF Switching request message.

Optionally, first sending module, for determine need session being switched to E-UTRAN when, to access and Mobile management function to ps domain AMF sends the second switching request message；

Optionally, first sending module, for determine need session being switched to E-UTRAN when, to access and Mobile management function to ps domain AMF sends third switching request message, wherein source base station in the third switching request message to mesh The transparent vessel of mark base station nullifies, and indicates that the transparent vessel is invalid.

The embodiment of the present invention also provides a kind of conversation management functional SMF, and the SMF includes：

First sending module flows to evolved packet system for sending the service quality QoS in session to access network entity The mapping relation information of EPS carryings, wherein the mapping relation information that the QoS flow to EPS carries is used to indicate the access net Entity establishes the QoS flow or described when determination needs for session to be switched to the land radio access web E-UTRAN of evolution The mapping of the corresponding 5G radio access bearer RAB of QoS flow to the radio access bearer E-RAB of evolution.

Optionally, the SMF further includes：

First establishes module, the mapping relations carried to EPS for establishing the QoS flow in session.

Optionally, the SMF further includes：

Receiving module, the request message sent for receiving the access network entity, wherein the request message is described It is sent to the SMF when access network entity determination needs session being switched to E-UTRAN.

The embodiment of the present invention also provides a kind of access network entity, including memory, processor and is stored in the storage One or more of device program, the processor are executed for reading one or more of programs described in any of the above-described Method described in access network entity execute the step of.

The embodiment of the present invention also provides a kind of conversation management functional SMF, including memory, processor and is stored in described One or more of memory program, the processor execute any of the above-described for reading one or more of programs The step of SMF described in the method is executed.

The embodiment of the present invention also provides a kind of computer readable storage medium, is stored in the computer readable storage medium The one or more programs for having computer executable, one or more of programs make the calculating when being executed by the computer Machine executes the step of access network entity described in method described in any one of the above embodiments executes.

The embodiment of the present invention also provides a kind of computer readable storage medium, is stored in the computer readable storage medium The one or more programs for having computer executable, one or more of programs make the calculating when being executed by the computer Machine executes the step of conversation management functional SMF described in method described in any one of the above embodiments is executed.

The above-mentioned technical proposal of the present invention at least has the advantages that：

The embodiment of the present invention, access network entity receive the service quality QoS stream in the session that conversation management functional SMF is sent To the mapping relation information of evolved packet system EPS carryings；The access network entity is reflected according to what the QoS flow to EPS carried Relation information is penetrated, the mapping of the radio access bearer E-RAB of evolution is carried out.In such manner, it is possible to effectively avoid the carrying of core-network side Mapping maps unmatched problem with access net side carrying.

Description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of application environment schematic diagram of bearing mapping method provided in an embodiment of the present invention；

Fig. 2 is a kind of flow diagram of bearing mapping method provided in an embodiment of the present invention；

Fig. 3 is the flow diagram of another bearing mapping method provided in an embodiment of the present invention；

Fig. 4 is a kind of data transmission schematic diagram provided in an embodiment of the present invention；

Fig. 5 is another data transmission schematic diagram provided in an embodiment of the present invention；

Fig. 6 is another data transmission schematic diagram provided in an embodiment of the present invention；

Fig. 7 is the flow diagram of another bearing mapping method provided in an embodiment of the present invention；

Fig. 8 is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention；

Fig. 9 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 10 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 11 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 12 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 13 is the structural schematic diagram of SMF provided in an embodiment of the present invention a kind of；

Figure 14 is the structural schematic diagram of another kind SMF provided in an embodiment of the present invention；

Figure 15 is the structural schematic diagram of another kind SMF provided in an embodiment of the present invention；

Figure 16 is the structural schematic diagram of another kind SMF provided in an embodiment of the present invention；

Figure 17 is the structural schematic diagram of another kind SMF provided in an embodiment of the present invention；

Figure 18 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 19 is the structural schematic diagram of another access network entity provided in an embodiment of the present invention；

Figure 20 is the structural schematic diagram of another kind SMF provided in an embodiment of the present invention.

Specific implementation mode

To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.

Next generation network (being collectively referred to as 5G in the present invention) needs to support the interoperability with traditional LTE network, wherein one Kind interoperability is completed by (inter-RAT) switching between the system between 5G networks and traditional LTE network.Referring to Fig. 1, figure 1 is a kind of network architecture schematic diagram for supporting 5G networks and LTE network to interoperate provided in an embodiment of the present invention, as shown in Figure 1, AMF (Access and Mobility Management Function, access and mobile management function to ps domain) in 5G networks and The Nx interfaces between MME (Mobility Management Entity, mobility management entity) in traditional LTE network are can Choosing support, when network support Nx interfaces, network can support the switching between 5G and LTE network, at this time MME and AMF it Between need to transmit the contextual information of UE, the contextual information of the UE include mobility context and session connection up and down Text.When the network of this support Nx interfaces of UE access, network can configure the registration mode of the UE to single registration mode (single registration mode)。

It does not support to switch when network does not support Nx interfaces, between 5G networks and LTE network, at this time in order to support mutually to grasp Make, network needs requirement UE to carry out double registrations (dual registration), i.e., keeps note in LTE network and 5G networks simultaneously Volume.In view of the support of business continuance under double registration modes, it is desirable that the SMF of the control plane in network supports PGW-C (to divide simultaneously Group data network PDN Gateway control plane) function, " HO registration (switching registration) ", Ke Yibao can be passed through in this way When card UE is moved between LTE and 5G, the session connection of the UE is anchored on always on identical user plane anchor point.

The UE of double registrations is further divided into single radio (single broadcast) abilities and dual radio (double-broad casting) energy Power.The UE of single radio can only keep the session connection of side in synchronization, otherwise only keep in the lte networks Connection or the only holding connection in 5G networks, will be inevitable in this way if when UE is moved between LTE network and 5G networks There is packet loss in ground, can not ensure seamless business continuance.And the UE of dual radio can be same in LTE network and 5G networks When keep connection, therefore when being moved between network, the mode that make-before-break (make-before-break) may be used is connected The switching connect while receiving data from target network, still can receive data from source network, thereby may be ensured that business Connection.

Under single registration mode, SMF needs to conversate context to the mapping of EPS bearer contexts, and 5G systems are hollow Mouthpiece is carried flows oneself establishment, LTE systems by 5G access nets according to the QoS (Quality of Service, service quality) in session The empty port load-supporting of system is one-to-one with EPS carryings, if only carrying out carrying mapping by SMF, it is possible that empty port load-supporting The unmatched problem of carrying made of being mapped with core-network side eats dishes without rice or wine to be created that x items are held that is, for identical session It carries, and SMF may map out the carrying of y items, therefore E-RAB (the Evolved Radio Access for causing 5G access nets to generate Bearer, the radio access bearer of evolution) EPS that generates of list and SMF carries the unmatched problem of list.

Based on above-mentioned scene, the present invention provides a kind of bearing mapping method, below with reference to specific embodiment to the present invention Bearing mapping method be described in detail.UE of the present invention can be such as mobile phone, computer, household appliance, tablet electricity Brain (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) Or the terminal devices such as wearable device (Wearable Device).Access network entity of the present invention is in 5G networks It can realize the entity device of access net function.It should be noted that not limiting the tool of the UE in embodiments of the present invention Body type.Session of the present invention can be PDU (Protocol Data Unit, protocol Data Unit) session, can also It is other sessions, is not specifically limited herein.

In embodiments of the present invention, the major function of SMF includes forwarding and detection, session control, the Yong Huping of data packet The selecting of face function, distribution of UE IP address (connection type IP) etc..AMF(Access and Mobility Management Function, access and mobile management function to ps domain) major function include management and safeguard the registration of UE and go NAS (Non Access Stratum, the Non-Access Stratum) connections of registered network state, the connection status, termination and UE of management UE And the N2 signaling connections etc. with RAN (Radio Access Network, wireless access network).It is transparent in the embodiment of the present invention Container is the transparent vessel of the communications field.

It is a kind of flow diagram of bearing mapping method provided in an embodiment of the present invention referring to Fig. 2, Fig. 2, such as Fig. 2 institutes Show, described method includes following steps：

Service quality QoS in the session that step 201, access network entity reception conversation management functional SMF are sent, which flows to, drills Into the mapping relation information of grouping system EPS carryings.

The mapping relation information that step 202, the access network entity are carried according to the QoS flow to EPS, carries out evolution The mapping of radio access bearer E-RAB.

In the embodiment, the SMF independently conversate in the mapping that is carried to EPS of QoS flow, and by the QoS flow The mapping relation information carried to EPS is sent to the access network entity.The SMF can by the AMF with session connection to The access network entity sends the mapping relation information that the QoS flow is carried to EPS.Specifically, the SMF is in conversating The mapping that is carried to EPS of QoS flow after, can send what the QoS flow was carried to EPS to the AMF with the session connection Mapping relation information, the AMF are received after the mapping relation information that the QoS flow is carried to EPS to the access network entity It sends.

The access network entity can receive the corresponding 5G RAB's of the activation QoS flow that the SMF or AMF is sent Request carries the mapping relation information of the QoS flow and EPS carryings in the request.For example, the access network entity The request for the activation 5G RAB that the SMF is sent can be received during session establishment.The access network entity also may be used To receive the request that can activate the QoS flow that AMF is sent in service request procedure.

After the access network entity receives the mapping relation information that the QoS flow that the SMF is sent is carried to EPS, According to the mapping relation information that the QoS flow to EPS carries, the mapping for carrying out E-RAB is established.Specifically, the access net is real Body can be in determining land radio access web E-UTRAN (the Evolved UMTS for needing for session to be switched to evolution Terrestrial Radio Access Network, the UMTS Terrestrial radio access network of evolution) when, it is arrived according to the QoS flow The mapping relation information of EPS carryings completes the mapping of corresponding 5G RAB to the E-RAB of the QoS flow.In such manner, it is possible to effectively avoid The carrying mapping of core-network side maps not corresponding problem with the carrying of access net side.Specifically, the access network entity according to The corresponding 5G RAB of the QoS are mapped as E-RAB by EPS carrying informations one by one.

In the embodiment, the access network entity receives after the mapping relation information that the QoS flow is carried to EPS not Understand the mapping for carrying out 5G RAB to E-RAB immediately, but when determination needs session being switched to E-UTRAN, according to the QoS The mapping relation information for flowing to EPS carryings completes the mapping of corresponding 5G RAB to the E-RAB of the QoS flow.

In some embodiment of the invention, the access network entity is establishing corresponding 5G RAB to the E-RAB of the QoS flow Mapping after, can also to the SMF send the first request message, for asking the SMF to be held to EPS according to the QoS flow The mapping relation information of load conversates context to the mapping of EPS bearer contexts.In the embodiment, due to the QoS flow The mapping carried to EPS is generated by the SMF itself, therefore can carry the QoS flow to EPS in first request message The mapping relation information of carrying can not also carry, the mapping relations that the SMF can be carried according to the QoS flow to EPS Information conversates context to the mapping of EPS bearer contexts.

In some embodiment of the invention, the access network entity can be sent by the AMF of session connection to the SMF First request message, for example, the mapping relations that the access network entity can be carried according to the QoS flow to EPS And the mapping relations of 5G RAB to E-RAB, fill in source base station to target BS transparent vessel (Source eNB to Target eNB transparent container) virtual value, then to the AMF send the first switching request (HO Required), carried in first switching request source base station to target BS transparent vessel virtual value.It is described After AMF receives first switching request, the first request message is sent to the SMF, for asking the SMF into guild Talk about mapping of the context to EPS bearer contexts.

In the embodiment, the access network entity can receive the activation institute that the SMF is sent during session establishment The request of 5G RAB is stated, the request that can activate the QoS flow of AMF transmissions can also be received in service request procedure.

Bearing mapping method provided in an embodiment of the present invention, access network entity receive the meeting that conversation management functional SMF is sent Service quality QoS in words flows to the mapping relation information of evolved packet system EPS carryings；The access network entity is according to The mapping relation information that QoS flow is carried to EPS carries out the mapping of the radio access bearer E-RAB of evolution.In such manner, it is possible to effectively It avoids the carrying of core-network side from mapping and maps unmatched problem with access net side carrying.

It is the flow diagram of another bearing mapping method provided in an embodiment of the present invention referring to Fig. 3, Fig. 3, such as Fig. 3 institutes Show, the described method comprises the following steps：

When step 301, access network entity determination need for session to be switched to the land radio access web E-UTRAN of evolution, Request message is sent to conversation management functional SMF, the request message is flowed to for asking the SMF to establish service quality QoS The mapping of evolved packet system EPS carryings.

In the embodiment, the SMF will not independently conversate in the mapping that is carried to EPS of QoS flow, but receiving QoS flow in being conversated according to the request message after the request message sent to the access network entity is carried to EPS Mapping.Specifically, the access network entity sends to the SMF and asks when determination needs session being switched to E-UTRAN Message, for asking the SMF to establish the mapping that QoS flow is carried to EPS.

The access network entity can carry out 5G RAB to E-RAB's before sending the request message to the SMF Mapping, so that it is determined that the mapping relations that the QoS flow is carried to EPS, can not also carry out the mapping of 5G RAB to E-RAB.It is right Ying Di can carry the mapping relations that the QoS flow that the access network entity is established is carried to EPS in the request message Information can not also carry the mapping relation information that the QoS flow that the access network entity is established is carried to EPS.

The SMF can be reflected based on request message progress QoS flow to what EPS was carried after receiving the request message Penetrate or conversate context to EPS bearer contexts mapping.Specifically, if without described in carrying in the request message The mapping relation information that the QoS flow that access network entity is established is carried to EPS, the SMF can disappear receiving the request The mapping that QoS flow is carried to EPS is directly carried out after breath.If carrying what the access network entity was established in the request message The mapping relation information that the QoS flow is carried to EPS, the SMF can believe according to the mapping relations that the QoS flow to EPS carries Breath conversate context to EPS bearer contexts mapping.

Specifically, when the SMF judges that not carrying the QoS flow that the access network entity is established in the request message arrives When the mapping relation information of EPS carryings, the SMF conversates according to network configuration or carrier policy to be carried to EPS Mapping, i.e., the correspondence that the QoS flow in session to EPS carries, the SMF can be after completing above-mentioned mapping to the access net Entity sends the mapping relation information that the QoS flow is carried to EPS, and the SMF can also further conversate context to EPS The mapping of bearer context.

In some embodiment of the invention, the access network entity can be sent by the AMF of session connection to the SMF The request message.Specifically, as shown in Figures 4 and 5, the access network entity determine need to be switched to E-UTRAN when, to The AMF sends request message (handover preparation request as shown in Figure 4 or switching request shown in fig. 5), is used for queued session The mapping relations carried to EPS.The AMF receives the request message, and is based on the request message to the management session SMF send session context request message.After the SMF receives the request, can according to it is described request conversate to The mapping of EPS carryings.

The access network entity can send handover preparation request to the AMF, can also send switching to the AMF and ask It asks.Specifically, when the access network entity sends handover preparation request to the AMF, the AMF can be based on the switching Preparation request determines that the access network entity does not establish the mapping that the QoS flow is carried to EPS, and the AMF asks the SMF The mapping that QoS flow is carried to EPS is carried out according to network configuration or carrier policy.When the access network entity is sent out to the AMF When sending switching request, the access network entity can be in the transparent vessel of the source base station in the switching request to target BS Value of filling a vacancy or retention, in this way, the AMF can determine institute when receiving the switching request according to the null value or retention State the mapping that access network entity does not establish QoS to the EPS carryings.

In some embodiment of the invention, the access network entity can also send the request message to the SMF Later, the mapping relation information that the QoS flow that the SMF is sent is carried to EPS is no longer received, and the access network entity will not root The mapping relation information carried according to the QoS flow to EPS establishes the mapping of 5G RAB to E-RAB.Specifically, as shown in figure 5, institute Switching request, the switching request can be sent when determination needs to be switched to E-UTRAN to the AMF by stating access network entity The transparent vessel of the source base station of middle carrying to target BS is invalid value, for example, the access network entity can be in the source base It stands and flag bit is set into the transparent vessel of target BS, be used to indicate the transparent vessel content invalid.The AMF is according to Switching request sends session context request to the SMF, and the SMF conversates up and down according to session context request Text arrives the mapping of EPS bearer contexts, and sends the EPS bearer contexts that mapping is completed to the AMF.Due to the access net To the transparent vessel content invalid of transparent base station, the AMF receives described source base station described in the switching request that entity is sent Mapping the EPS bearer contexts completed will not send to the access network entity again later, but into traditional LTE network MME sends the EPS bearer contexts, and the MME sends the switching request for carrying EPS and carrying list to target BS, and For source base station described in the switching request to the transparent vessel content invalid of target BS, the target BS parses the switching Request determines the source base station to the transparent vessel content invalid of target BS, and the target BS is according in the switching request E-RAB is established in the EPS carrying lists of carrying, and the target BS completes the rear to MME transmissions of the foundation of the E-RAB Response message, the MME return to positive relocation response (Forward according to the response message to the AMF Relocation Response), the MME continues follow-up switching flow.It should be noted that in the embodiment, the method It is required that the base station in traditional LTE network can recognize that the instruction that 5G access nets provide.

In the embodiment, the access network entity is determining that the access net is real when needing session being switched to E-UTRAN Know from experience and the corresponding 5G RAB of session are mapped as E-RAB one by one, then according to QoS flow to the relationship of 5G RAB, determines that QoS flow arrives The mapping relations of E-RAB or EPS carryings, the access network entity to SMF transmissions carry the QoS flow to E-RAB or The request message of the mapping relation information of EPS carryings.

The access network entity can be compiled according to the E-RAB that the carrying coding rule in LTE network generates mapping Number, the access network entity sends the request for carrying the QoS flow to the EPS mapping relation informations carried to the SMF and disappears The mode of breath can be sent to the SMF by the AMF.Specifically, as shown in fig. 6, the access network entity can root The mapping relations carried to EPS according to the QoS flow of foundation fill in source base station to the virtual value of target BS transparent vessel, and to described AMF sends the switching request for carrying the virtual value, and the AMF can be according to described effective when receiving the switching request Value determines the mapping relations that the QoS flow that the access network entity is established is carried to EPS, and is carried to SMF transmissions The QoS flow to the EPS mapping relation informations carried request message, for asking the SMF according to the QoS flow to EPS The mapping relation information of carrying conversates context to the mapping of EPS bearer contexts.The SMF can be according to the E- The number of RAB determines corresponding EPS load identifications information, then according to the mapping relation information of the QoS flow to E-RAB and The corresponding EPS load identifications information of number of the E-RAB, conversate context to EPS bearer contexts mapping.

In embodiments of the present invention, the SMF can be arrived according to the type of service and/or priority of QoS flow progress QoS flow The mapping of EPS carryings.Specifically, non-GBR (non-real-time service) QoS flow can be mapped to default by the SMF GBR dedicated (real time business is special) QoS flow is mapped to dedicated bearer (specially by bearer (default bearing) With carrying).For example, the non-real-time service QoS flow that type is " match all " can be mapped to default bearing by the SMF.

In the above-mentioned all embodiments of the present invention, the SMF is in context the reflecting to EPS bearer contexts that conversate After penetrating, the EPS bearer context information that mapping is completed can be sent to AMF, the AMF will be in the EPS carryings of mapping completion Context information is sent to the MME in LTE network so that the MME can complete follow-up switching flow.Specifically, the AMF connects MM Context (the mobility of UE can be combined later by receiving the EPS bearer contexts that the SMF is sent Management Context) and EPS bearer contexts establishment UE contexts (UE Context), then connect by Nx Mouth gives the UE context transfers to the MME.

Optionally, the method further includes：

The access network entity receives the mapping relation information that the QoS flow that the SMF is sent is carried to EPS, and root The mapping of 5G RAB to E-RAB is carried out according to the mapping relation information that the QoS flow to EPS carries.

In the embodiment, the access network entity can be by 5G RAB mono- when determining and needing session being switched to E-UTRAN One is mapped as E-RAB, then determines the mapping relations that QoS flow is carried to EPS, and carry the QoS flow to SMF transmissions The request message of the mapping relation information carried to E-RAB or EPS.For example, the access network entity can be according to described The mapping relations that QoS flow is carried to E-RAB or EPS are filled in source base station to the transparent vessel of target BS, and are sent to the AMF Carry the source base station to the transparent vessel virtual value of target BS the first switching request message, in this way, the SMF is connecing The mapping relations that the QoS flow is carried to EPS of carrying for receiving AMF forwarding later can be according to the QoS flow to EPS The mapping relations of carrying conversate context to the mapping of EPS bearer contexts.

Optionally, the method further includes：

In the embodiment, the request message that the access network entity is sent to the AMF can be handover preparation request, It can be switching request.Specifically, if the request message that the access network entity is sent to the AMF disappears for handover preparation request Breath, the AMF can be directly to institutes after receiving the mapping relation information that the QoS flow that the SMF is sent is carried to EPS It states access network entity and sends the mapping relation information that the QoS flow is carried to EPS, the access network entity is according to the QoS flow The mapping relation information carried to EPS establishes the carrying of 5G RAB to E-RAB, and is filled according to the relevant information of the E-RAB Then source base station carries the source base station to target BS transparent vessel to target BS transparent vessel to AMF transmissions First switching request message of virtual value.

If the request message that the access network entity is sent to the AMF is switching request, the access network entity can be It sets source base station to null value or retention to target BS transparent vessel in the switching request.The access network entity can be Rear sent to the AMF for completing the carrying of 5G RAB to E-RAB carries the source base station and has to target BS transparent vessel First switching request message of valid value.Specifically, the access network entity can send to the AMF carry the source base first It stands to the transparent vessel null value of target BS or the switching request of retention, the access network entity can be in completion 5G RAB to E- The rear of the carrying of RAB sends the first switching for carrying the source base station to target BS transparent vessel virtual value to the AMF Request message.In this way, the AMF can determine the access net according to the source base station to target BS transparent vessel virtual value Entity has been completed the mapping of 5G RAB to E-RAB.

In the embodiment, the access network entity can be without 5G RAB to E- before sending the request message The mapping of RAB does not carry the mapping that the QoS flow that the access network entity is established is carried to EPS in the request message Relation information.The request message establishes the mapping that QoS flow is carried to EPS for the SMF, and is returned to the access network entity Return the mapping relation information that the QoS flow is carried to EPS.The access network entity is receiving what the QoS flow was carried to EPS The mapping of 5G RAB to E-RAB is carried out after mapping relation information according to the mapping relation information that the QoS flow to EPS carries.

In the embodiment, the AMF can be after receiving the mapping relation information that the QoS flow is carried to EPS not It can be forwarded to the access network entity, that is to say, that in this embodiment, the access network entity will not be according to the QoS flow The mapping relation information carried to EPS establishes the mapping of 5G RAB to E-RAB.

When the access network entity determination needs session being switched to E-UTRAN, to access and mobile management function to ps domain AMF Send third switching request message, wherein the transparent vessel of source base station in the third switching request message to target BS It nullifies, and indicates that the transparent vessel is invalid.

Specifically, flag bit is arranged in the access network entity in the transparent vessel of the source base station to target BS, uses In the instruction transparent vessel content invalid.The AMF sends session context request according to the switching request to the SMF, The SMF according to session context request conversate context to EPS bearer contexts mapping, and to the AMF Send the EPS bearer contexts that mapping is completed.Source base station described in the switching request sent due to the access network entity is to thoroughly The transparent vessel content invalid of bright base station, the AMF receive it is described mapping complete EPS bearer contexts after will not again to The access network entity is sent, but the MME into traditional LTE network sends the EPS bearer contexts, and the MME is to mesh Mark base station sends the switching request for carrying EPS carrying lists, and source base station described in the switching request is to target BS Transparent vessel content invalid, the target BS parse the switching request determine the source base station to target BS transparent appearance Device content invalid, the target BS establish E-RAB, the target according to the EPS carrying lists carried in the switching request Base station sends response message completing the rear of the foundation of the E-RAB to the MME, the MME according to the response message to The AMF returns to positive relocation response (Forward relocation Response), and the MME continues follow-up switching stream Journey.It should be noted that in the embodiment, the method requires the base station in traditional LTE network to can recognize that 5G accesses net The instruction provided.

Bearing mapping method provided in an embodiment of the present invention, access network entity determine the land for needing session being switched to evolution When ground wireless access network E-UTRAN, request message is sent to conversation management functional SMF, the request message is described for asking SMF establishes the mapping that service quality QoS flows to evolved packet system EPS carryings.In such manner, it is possible to effectively avoid holding for core-network side It carries mapping and maps unmatched problem with access net side carrying.

It is the flow diagram of another bearing mapping method provided in an embodiment of the present invention referring to Fig. 7, Fig. 7, such as Fig. 7 institutes Show, described method includes following steps：

Step 701, conversation management functional SMF send the service quality QoS in session to access network entity and flow to evolution point The mapping relation information of group system EPS carryings, wherein the mapping relation information that the QoS flow to EPS carries is used to indicate described Access network entity determine need for session to be switched to the land radio access web E-UTRAN of evolution when, establish the QoS flow or The mapping of radio access bearer E-RABs of the corresponding 5G radio access bearer RAB of the QoS flow to evolution.

Optionally, if carrying the mapping that the QoS flow that the access network entity is established is carried to EPS in the request message Relation information, the request message are used to ask the SMF to be carried out according to the mapping relation information that the QoS flow to EPS carries Mapping of the session context to EPS bearer contexts.

Optionally, the request message establishes the mapping that QoS flow is carried to EPS for the SMF, and returns to the QoS Flow to the mapping relation information of EPS carryings.

Optionally, the method further includes：

If access network entity determination needs session being switched to E-UTRAN, the access network entity is by 5G RAB mono- One is mapped as E-RAB, and according to QoS flow to the mapping relations of 5G RAB, determines the mapping relations that QoS flow is carried to EPS；

The access network entity carries the QoS flow asking to the EPS mapping relation informations carried to SMF transmissions Seek message.

Optionally, the method further includes：

The access network entity fills in source base station to the saturating of target BS according to the mapping relations of 5G RAB to the E-RAB Bright container, and the transparent vessel for carrying the source base station to target BS is sent to access and mobile management function to ps domain AMF First switching request message.

When the access network entity determination needs session being switched to E-UTRAN, to access and mobile management function to ps domain AMF Send the second switching request message, wherein the transparent vessel of source base station in the second switching request message to target BS It nullifies, and indicates that the transparent vessel is invalid；

The second switching request message is used to indicate the AMF and sends request message to the SMF, described for asking SMF establishes the mapping that QoS flow is carried to EPS, and returns to the mapping relation information that the QoS flow is carried to EPS to the AMF.

It should be noted that can be that the sides SMF corresponding with embodiment shown in Fig. 1 to Fig. 6 are implemented in the present embodiment Example, the correlation step that above-mentioned SMF is executed may refer to related description in Fig. 1 to embodiment illustrated in fig. 6, and details are not described herein again.

Referring to Fig. 8, Fig. 8 is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention, as shown in figure 8, The access network entity includes：

First receiving module 801 is flowed to for receiving the service quality QoS in the session that conversation management functional SMF is sent The mapping relation information of evolved packet system EPS carryings；

Mapping block 802, the mapping relation information for being carried according to the QoS flow to EPS carry out the wireless of evolution and connect Enter to carry the mapping of E-RAB.

Optionally, the mapping block 802, if needing session being switched to evolution for access network entity determination When land radio access web E-UTRAN, the QoS flow or institute are completed according to the mapping relation information that the QoS flow to EPS carries State the mapping of corresponding 5G RAB to the E-RAB of QoS flow.

Optionally, first receiving module 801 is sent for receiving access and mobile management function to ps domain AMF or SMF The corresponding 5G RAB of the activation QoS flow request, the mapping relations of the QoS flow and EPS carryings are carried in the request Information.

Optionally, first receiving module 801, for during session establishment, receiving described in the activation that SMF is sent The request of 5G RAB；Or

It should be noted that above-mentioned access network entity can be the access net in embodiment shown in Fig. 2 in the present embodiment Entity, the arbitrary embodiment of access network entity can be real by the above-mentioned access net in the present embodiment in embodiment illustrated in fig. 2 Body is realized, and reaches identical advantageous effect, and details are not described herein again.

Referring to Fig. 9, Fig. 9 is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention, as shown in figure 9, The access network entity includes：

First sending module 901, in the determining land radio access web E-UTRAN for needing for session to be switched to evolution When, request message is sent to conversation management functional SMF, the request message is for asking the SMF to establish service quality QoS stream To the mapping of evolved packet system EPS carryings.

Optionally, it is held to E-RAB or EPS if carrying the QoS flow that the access network entity is established in the request message The mapping relation information of load, the request message are used to ask the SMF reflecting according to the QoS flow to EPSE-RAB or carrying Penetrate relation information conversate context to EPS bearer contexts mapping.

Optionally, the request message is used to ask the SMF to establish the mapping that QoS flow is carried to EPS, and described in return The mapping relation information that QoS flow is carried to EPS.

Optionally, it is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention referring to Figure 10, Figure 10, such as Shown in Figure 10, the access network entity further includes：

Second receiving module 902, the mapping relations letter carried to EPS for receiving the QoS flow that the SMF is sent Breath, and the mapping of mapping relation information progress 5G RAB to the E-RAB carried according to the QoS flow to EPS.

Optionally, it is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention referring to Figure 11, Figure 11, such as Shown in Figure 11, first sending module 901 includes：

Map unit 9011, for if it is determined that need session being switched to E-UTRAN, 5G RAB to be mapped as E- one by one RAB, and according to QoS flow to the mapping relations of 5G RAB, determine the mapping relations that QoS flow is carried to E-RAB or EPS；

Transmission unit 9012, for sending the mapping pass for carrying the QoS flow and being carried to E-RAB or EPS to the SMF It is the request message of information.

Optionally, it is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention referring to Figure 12, Figure 12, such as Shown in Figure 12, the access network entity further includes：

Second sending module 903, for filling in source base station to the transparent of target BS according to the relevant information of the E-RAB Container, and the of the transparent vessel for carrying the source base station to target BS is sent to access and mobile management function to ps domain AMF A handover request message.

Optionally, first sending module 901, for determine need session being switched to E-UTRAN when, to access The second switching request message is sent with mobile management function to ps domain AMF；

Optionally, first sending module 901, for determine need session being switched to E-UTRAN when, to access Third switching request message is sent with mobile management function to ps domain AMF, wherein the source base station in the third switching request message arrives The transparent vessel of target BS nullifies, and indicates that the transparent vessel is invalid.

It should be noted that above-mentioned access network entity can be connecing in Fig. 1-embodiments shown in fig. 6 in the present embodiment Enter network entity, the arbitrary embodiment of access network entity can be by above-mentioned in the present embodiment in Fig. 1-embodiment illustrated in fig. 6 Access network entity is realized, and reaches identical advantageous effect, and details are not described herein again.

Referring to Figure 13, Figure 13 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, as shown in figure 13, described SMF includes：

First sending module 1301, the service quality QoS for being sent to access network entity in session flow to evolution grouping The mapping relation information of system EPS carryings, wherein the mapping relation information that the QoS flow to EPS carries is used to indicate described connect Enter network entity when determination needs for session to be switched to the land radio access web E-UTRAN of evolution, establishes the QoS flow or institute State the mapping of the corresponding 5G radio access bearer RAB of QoS flow to the radio access bearer E-RAB of evolution.

Optionally, referring to Figure 14, Figure 14 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, such as Figure 14 institutes Show, the SMF further includes：

First establishes module 1302, the mapping relations carried to EPS for establishing the QoS flow in session.

Optionally, referring to Figure 15, Figure 15 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, such as Figure 15 institutes Show, the SMF further includes：

Receiving module 1303, the request message sent for receiving the access network entity, wherein the request message is The access network entity determination is sent when needing session being switched to E-UTRAN to the SMF；

Second establishes module 1304, if the QoS established for not carrying the access network entity in the request message The mapping relation information for flowing to EPS carryings, the mapping that QoS flow is carried to EPS is established based on the request message.

Optionally, referring to Figure 16, Figure 16 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, such as Figure 16 institutes Show, the SMF further includes：

Mapping block 1305, if for carrying QoS flow that the access network entity is established in the request message to EPS The mapping relation information of carrying, the mapping relation information carried according to the QoS flow to EPS the context that conversates are held to EPS Carry the mapping of context.

Optionally, the mapping relation information that the QoS flow that the access network entity is established is carried to EPS is QoS flow to E-RAB Mapping relation information；Or

The mapping relation information that the QoS flow that the access network entity is established is carried to EPS for QoS flow to 5G RAB mapping Relation information.

Optionally, referring to Figure 17, Figure 17 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, such as Figure 17 institutes Show, the SMF further includes：

Second sending module 1306, for sending the EPS carryings that mapping is completed to access and mobile management function to ps domain AMF Hereafter.

It should be noted that above-mentioned SMF can be the SMF in Fig. 1-embodiments shown in fig. 6, Fig. 1-figure in the present embodiment The arbitrary embodiment of SMF can be realized by the above-mentioned SMF in the present embodiment in 6 illustrated embodiments, and reach identical Advantageous effect, details are not described herein again.

Referring to Figure 18, Figure 18 is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention, such as Figure 18 institutes Show, the access network entity includes：Processor 1800, transceiver 1810, memory 1820, user interface 1830 and bus connect Mouthful, wherein：

Processor 1800 executes following process for reading the one or more of program stored in memory 1820：

It receives the service quality QoS in the session that conversation management functional SMF is sent and flows to evolved packet system EPS carryings Mapping relation information；

According to the mapping relation information that the QoS flow to EPS carries, reflecting for the radio access bearer E-RAB of evolution is carried out It penetrates.

Wherein, transceiver 1810, for sending and receiving data under the control of processor 1800.

In figure 18, bus architecture may include the bus and bridge of any number of interconnection, specifically by 1800 generation of processor The various circuits for the memory that the one or more processors and memory 1820 of table represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 1810 can To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 1830, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..

Processor 1800 is responsible for bus architecture and common processing, and memory 1820 can store processor 1800 and exist Execute used data when operation.

Optionally, the mapping relation information that the processor 1800 is carried according to the QoS flow to EPS carries out evolution The mapping of radio access bearer E-RAB, including：

If the access network entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution, root The QoS flow or corresponding 5G RAB to the E-RAB of the QoS flow are completed according to the mapping relation information that the QoS flow to EPS carries Mapping.

Optionally, the processor 1800 receives the mapping relation information that the QoS flow that the SMF is sent is carried to EPS, packet It includes：

Reception access is asked with mobile management function to ps domain AMF or SMF the activation corresponding 5G RAB's of QoS flow sent It asks, the mapping relation information of the QoS flow and EPS carryings is carried in the request.

Optionally, the processor 1800 receives the corresponding 5G RAB's of the activation QoS flow that AMF or SMF is sent Request, including：

During session establishment, the request for the activation 5G RAB that SMF is sent is received；Or

In service request procedure, the request that can activate the QoS flow that SMF or AMF is sent is received.

It should be noted that above-mentioned access network entity can be connecing in Fig. 1-embodiments shown in Fig. 2 in the present embodiment Enter network entity, the arbitrary embodiment of access network entity can be by above-mentioned in the present embodiment in Fig. 1-embodiment illustrated in fig. 2 Access network entity is realized, and reaches identical advantageous effect, and details are not described herein again.

Referring to Figure 19, Figure 19 is a kind of structural schematic diagram of access network entity provided in an embodiment of the present invention, such as Figure 19 institutes Show, the access network entity includes：Processor 1900, transceiver 1910, memory 1920, user interface 1930 and bus connect Mouthful, wherein：

Processor 1900 executes following process for reading the one or more of program stored in memory 1920：

When determination needs for session to be switched to the land radio access web E-UTRAN of evolution, sent out to conversation management functional SMF Request message, the request message is sent to flow to evolved packet system EPS carryings for asking the SMF to establish service quality QoS Mapping.

Wherein, transceiver 1910, for sending and receiving data under the control of processor 1900.

In Figure 19, bus architecture may include the bus and bridge of any number of interconnection, specifically by 1900 generation of processor The various circuits for the memory that the one or more processors and memory 1920 of table represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 1910 can To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 1930, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..

Processor 1900 is responsible for bus architecture and common processing, and memory 1920 can store processor 1900 and exist Execute used data when operation.

Optionally, the processor 1900 is additionally operable to：

The mapping relation information that the QoS flow that the SMF is sent is carried to E-RAB or EPS is received, and according to described QoS flow carries out the mapping of 5G RAB to E-RAB to the mapping relation information that E-RAB or EPS is carried.

Optionally, it when the determination of the processor 1900 needs session being switched to E-UTRAN, sends and asks to the SMF Message, including：

If the access network entity determination needs session being switched to E-UTRAN, 5G RAB are mapped as E-RAB one by one, And according to QoS flow to the mapping relations of 5G RAB, determine the mapping relations that QoS flow is carried to EPS；

The request message for carrying the QoS flow to the EPS mapping relation informations carried is sent to the SMF.

Optionally, the processor 1900 is additionally operable to：

According to the relevant information of the E-RAB fill in source base station to target BS transparent vessel, and to access and mobile Property management function AMF send the first switching request message for carrying the source base station to the transparent vessel of target BS.

Optionally, the processor 1900 the access network entity determination need session being switched to E-UTRAN when, to SMF sends request message, including：

When access network entity determination needs session being switched to E-UTRAN, to access and mobile management function to ps domain AMF sends the second switching request message；

Referring to Figure 20, Figure 20 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention, as shown in figure 20, described SMF includes：Processor 2000, transceiver 2010, memory 2020, user interface 2030 and bus interface, wherein：

Processor 2000 executes following process for reading the one or more of program stored in memory 2020：

The service quality QoS in session, which is sent, to access network entity flows to the mapping relations that evolved packet system EPS is carried Information, wherein the mapping relation information that the QoS flow to EPS carries be used to indicate the access network entity determine need by When session is switched to the land radio access web E-UTRAN of evolution, establishes the QoS flow or the corresponding 5G of the QoS flow is wireless Mappings of the access bearer RAB to the radio access bearer E-RAB of evolution.

Wherein, transceiver 2010, for sending and receiving data under the control of processor 2000.

In fig. 20, bus architecture may include the bus and bridge of any number of interconnection, specifically by 2000 generation of processor The various circuits for the memory that the one or more processors and memory 2020 of table represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 2010 can To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 2030, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..

Processor 2000 is responsible for bus architecture and common processing, and memory 2020 can store processor 2000 and exist Execute used data when operation.

Optionally, the processor 2000 sends the mapping that the QoS flow in session is carried to EPS to the access network entity Before the step of relation information, it is additionally operable to：

The mapping relations that the QoS flow established in session is carried to EPS；

Optionally, the processor 2000 sends the mapping relations that the QoS flow is carried to EPS to the access network entity Before the step of information, it is additionally operable to：

Optionally, the processor 2000 is additionally operable to：

If carrying the mapping relations letter that the QoS flow that the access network entity is established is carried to EPS in the request message Breath, the SMF conversate context to EPS bearer contexts according to the mapping relation information that the QoS flow to EPS carries Mapping.

Optionally, the processor 2000 is additionally operable to：

The EPS bearer contexts that mapping is completed are sent to access and mobile management function to ps domain AMF.

The present invention also provides a kind of computer readable storage medium, calculating is stored in the computer readable storage medium The executable one or more programs of machine, one or more of programs execute the computer when being executed by the computer Following steps：

Optionally, the mapping relation information carried according to the QoS flow to EPS, the wireless access for carrying out evolution are held The mapping of E-RAB is carried, including：

Optionally, the mapping relation information for receiving the QoS flow that the SMF is sent and being carried to EPS, including：

Optionally, the request for receiving the corresponding 5G RAB of the activation QoS flow that AMF or SMF is sent, including：

Optionally, the computer also executes following steps：

Optionally, when the determination needs session being switched to E-UTRAN, request message is sent to the SMF, including：

If the access network entity determination needs session being switched to E-UTRAN, 5G RAB are mapped as E-RAB, and root According to QoS flow to the mapping relations of 5G RAB, the mapping relations that QoS flow is carried to E-RAB or EPS are determined；

The request message for carrying the QoS flow to the E-RAB or EPS mapping relation informations carried is sent to the SMF.

Optionally, the computer also executes following steps：

Optionally, when the determination needs session being switched to E-UTRAN, request message is sent to SMF, including：

Optionally, described when access network entity determination needs session being switched to E-UTRAN, it is asked to SMF transmissions Message is sought, including：

It is described determine need session being switched to E-UTRAN when, send third to access and mobile management function to ps domain AMF Switching request message, wherein the transparent vessel of source base station to target BS in the third switching request message nullifies, And indicate that the transparent vessel is invalid.

The storage medium, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc..

Optionally, described to send the QoS flow in session to the EPS mapping relation informations carried to the access network entity Before step, the computer also executes following steps：

The mapping relations that the QoS flow established in session is carried to EPS.

Optionally, the described the step of mapping relation information that the QoS flow is carried to EPS is sent to the access network entity Before, the computer also executes following steps：

Receive the request message that the access network entity is sent, wherein the request message is that the access network entity is true It is sent to the SMF when needing session being switched to E-UTRAN surely.

Optionally, the computer also executes following steps：

If carrying the mapping relations letter that the QoS flow that the access network entity is established is carried to EPS in the request message Breath, the mapping relation information carried according to the QoS flow to EPS conversate context to the mapping of EPS bearer contexts.

Optionally, the computer also executes following steps：

In several embodiments provided herein, it should be understood that disclosed method and apparatus, it can be by other Mode realize.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only For a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase Coupling, direct-coupling or communication connection between mutually can be by some interfaces, the INDIRECT COUPLING or communication of device or unit Connection can be electrical, machinery or other forms.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that the independent physics of each unit includes, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.

The above-mentioned integrated unit being realized in the form of SFU software functional unit can be stored in one and computer-readable deposit In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes receiving/transmission method described in each embodiment of the present invention Part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store The medium of program code.

The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise of not departing from above-mentioned principle of the invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of bearing mapping method, which is characterized in that the method includes：

The service quality QoS that access network entity receives in the session that conversation management functional SMF is sent flows to evolved packet system EPS The mapping relation information of carrying；

The mapping relation information that the access network entity is carried according to the QoS flow to EPS carries out the radio access bearer of evolution The mapping of E-RAB.

2. the method as described in claim 1, which is characterized in that the access network entity is carried according to the QoS flow to EPS Mapping relation information carries out the mapping of the radio access bearer E-RAB of evolution, including：

It is described to connect if the access network entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution Enter network entity and the QoS flow or the corresponding 5G of the QoS flow are completed according to the mapping relation information that the QoS flow to EPS carries The mapping of RAB to E-RAB.

3. the method as described in claim 1, which is characterized in that the access network entity receive QoS flow that the SMF is sent to The mapping relation information of EPS carryings, including：

The activation QoS flow that the access network entity receives access with mobile management function to ps domain AMF or SMF are sent is corresponding The request of 5G RAB carries the mapping relation information of the QoS flow and EPS carryings in the request.

4. method as claimed in claim 3, which is characterized in that the access network entity receives the activation that AMF or SMF is sent The request of the corresponding 5G RAB of the QoS flow, including：

In service request procedure, the access network entity receives the request that can activate the QoS flow that SMF or AMF is sent.

5. a kind of bearing mapping method, which is characterized in that the method includes：

When access network entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution, to session management work( Energy SMF sends request message, and the request message flows to evolved packet system for asking the SMF to establish service quality QoS The mapping of EPS carryings.

6. method as claimed in claim 5, which is characterized in that built if carrying the access network entity in the request message The mapping relation information that vertical QoS flow is carried to E-RAB or EPS, the request message is for asking the SMF according to The mapping relation information that QoS flow is carried to E-RAB or EPS conversates context to the mapping of EPS bearer contexts.

7. method as claimed in claim 6, which is characterized in that the access network entity determination needs session being switched to E- When UTRAN, request message is sent to the SMF, including：

If the access network entity determination needs session being switched to E-UTRAN, 5G RAB are mapped as by the access network entity E-RAB, and according to QoS flow to the mapping relations of 5G RAB, determine the mapping relations that QoS flow is carried to E-RAB or EPS；

The access network entity sends the mapping relation information for carrying the QoS flow and being carried to E-RAB or EPS to the SMF Request message.

8. the method for claim 7, which is characterized in that the method further includes：

The access network entity according to the relevant information of the E-RAB fill in source base station to target BS transparent vessel, and to Access and mobile management function to ps domain AMF send the first switching request for carrying the source base station to the transparent vessel of target BS Message.

9. method as claimed in claim 5, which is characterized in that the access network entity determination needs session being switched to E- When UTRAN, request message is sent to SMF, including：

When the access network entity determination needs session being switched to E-UTRAN, sent to access and mobile management function to ps domain AMF Second switching request message；

The second switching request message is used to indicate the AMF and sends request message to the SMF, for asking the SMF The mapping that QoS flow is carried to EPS is established, and returns to what the QoS flow was carried to EPS to the AMF or described access network entities Mapping relation information.

10. method as claimed in claim 5, which is characterized in that the access network entity determination needs session being switched to E- When UTRAN, request message is sent to SMF, including：

When the access network entity determination needs session being switched to E-UTRAN, sent to access and mobile management function to ps domain AMF Third switching request message, wherein the transparent vessel of source base station to target BS in the third switching request message is set as Null value, and indicate that the transparent vessel is invalid.

11. a kind of bearing mapping method, which is characterized in that including：

Conversation management functional SMF sends the service quality QoS in session to access network entity and flows to evolved packet system EPS carryings Mapping relation information, wherein the mapping relation information that the QoS flow to EPS carries is used to indicate the access network entity and exists When determination needs for session to be switched to the land radio access web E-UTRAN of evolution, the QoS flow or the QoS flow pair are established Mappings of the 5G radio access bearer RAB answered to the radio access bearer E-RAB of evolution.

12. method as claimed in claim 11, which is characterized in that the SMF is sent to the access network entity in session Before the step of mapping relation information that QoS flow is carried to EPS, the method further includes：

13. method as claimed in claim 11, which is characterized in that the SMF sends the QoS flow to the access network entity To EPS carry mapping relation information the step of before, the method further includes：

The SMF receives the request message that the access network entity is sent, wherein the request message is the access network entity Determine that the when of needing session being switched to E-UTRAN sends to the SMF.

14. a kind of access network entity, which is characterized in that the access network entity includes：

First receiving module flows to evolution grouping for receiving the service quality QoS in the session that conversation management functional SMF is sent The mapping relation information of system EPS carryings；

Mapping block, the mapping relation information for being carried according to the QoS flow to EPS, carries out the radio access bearer of evolution The mapping of E-RAB.

15. access network entity as claimed in claim 14, which is characterized in that the mapping block, if being used for the access net When entity determination needs for session to be switched to the land radio access web E-UTRAN of evolution, carried according to the QoS flow to EPS Mapping relation information complete the mapping of the QoS flow or corresponding 5G RAB to the E-RAB of the QoS flow.

16. access network entity as claimed in claim 14, which is characterized in that first receiving module, for receiving access The request of 5G RAB corresponding with the activation QoS flow that mobile management function to ps domain AMF or SMF are sent, takes in the request Mapping relation information with the QoS flow and EPS carryings.

17. access network entity as claimed in claim 16, which is characterized in that first receiving module, for being built in session During vertical, the request for the activation 5G RAB that SMF is sent is received；Or

18. a kind of access network entity, which is characterized in that the access network entity includes：

First sending module, for determine need for session to be switched to the land radio access web E-UTRAN of evolution when, Xiang Hui It talks about management function SMF and sends request message, the request message flows to evolution for asking the SMF to establish service quality QoS The mapping of grouping system EPS carryings.

19. access network entity as claimed in claim 18, which is characterized in that if carrying the access in the request message The mapping relation information that the QoS flow that network entity is established is carried to E-RAB or EPS, the request message is for asking the SMF roots According to the QoS flow to E-RAB or the EPS mapping relation information carried conversate context to EPS bearer contexts mapping.

20. access network entity as claimed in claim 19, which is characterized in that first sending module includes：

Map unit, for if it is determined that need session being switched to E-UTRAN, 5G RAB being mapped as E-RAB, and according to QoS The mapping relations for flowing to 5G RAB determine the mapping relations that QoS flow is carried to E-RAB or EPS；

Transmission unit carries the QoS flow to the E-RAB or EPS mapping relation informations carried for being sent to the SMF Request message.

21. access network entity as claimed in claim 20, which is characterized in that the access network entity further includes：

Second sending module, the transparent vessel for filling in source base station to target BS according to the relevant information of the E-RAB, and The first switching that the transparent vessel for carrying the source base station to target BS is sent to access and mobile management function to ps domain AMF is asked Seek message.

22. access network entity as claimed in claim 18, which is characterized in that first sending module, for being needed determining When session is switched to E-UTRAN, the second switching request message is sent to access and mobile management function to ps domain AMF；

23. access network entity as claimed in claim 18, which is characterized in that first sending module, for being needed determining When session is switched to E-UTRAN, third switching request message is sent to access and mobile management function to ps domain AMF, wherein institute The transparent vessel for stating source base station to target BS in third switching request message nullifies, and indicate the transparent vessel without Effect.

24. a kind of conversation management functional SMF, which is characterized in that the SMF includes：

First sending module, the service quality QoS for being sent to access network entity in session flow to evolved packet system EPS and hold The mapping relation information of load, wherein the mapping relation information that the QoS flow to EPS carries is used to indicate the access network entity When determination needs for session to be switched to the land radio access web E-UTRAN of evolution, the QoS flow or the QoS flow are established Mappings of the corresponding 5G radio access bearer RAB to the radio access bearer E-RAB of evolution.

25. SMF as claimed in claim 24, which is characterized in that the SMF further includes：

26. SMF as claimed in claim 24, which is characterized in that the SMF further includes：

Receiving module, the request message sent for receiving the access network entity, wherein the request message is the access It is sent to the SMF when network entity determination needs session being switched to E-UTRAN.

27. a kind of access network entity, including memory, processor and it is stored in one or more of memory journey Sequence, which is characterized in that it is any to execute the claims 1~10 for reading one or more of programs for the processor The step of access network entity described in method described in executes.

28. a kind of conversation management functional SMF, including memory, processor and one be stored in the memory or more A program, which is characterized in that the processor executes the claims 11~13 for reading one or more of programs The step of SMF described in any one of them method is executed.

29. a kind of computer readable storage medium, be stored in the computer readable storage medium computer it is executable one A or multiple programs, which is characterized in that one or more of programs execute computer when being executed by the computer The step of access network entity described in 1~10 any one of them method of the claims executes.

30. a kind of computer readable storage medium, be stored in the computer readable storage medium computer it is executable one A or multiple programs, which is characterized in that one or more of programs execute computer when being executed by the computer The step of conversation management functional SMF described in 11~13 any one of them method of the claims is executed.