WO2014142570A1 - 근접 서비스 기반의 무선 접속 방식 변경 방법 및 장치 - Google Patents
근접 서비스 기반의 무선 접속 방식 변경 방법 및 장치 Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
- H04W76/34—Selective release of ongoing connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
Definitions
- the description of the present invention relates to a wireless communication system, and more particularly, to a method and apparatus for changing a wireless access method based on a proximity service.
- Proximity Service means a method of supporting communication between devices located in a physically close proximity. Specifically, ProSe aims to support the operation of discovering and ultimately exchanging application-related data running on devices in close proximity to each other. For example, consider applying ProSe to applications such as social network services (SNS), commerce, and games.
- SNS social network services
- ProSe may also be called Device-to-Device (D2D) communication. That is, by establishing a direct link between a plurality of devices (eg, UEs), user data (eg, voice, multimedia data, etc.) can be directly transferred between devices without going through a network. It is a communication method.
- ProSe communication may include methods such as terminal-to-terminal (UE-t to UE) communication, peer-to-peer (Peer—t to Peer) communication, and the like.
- the p ro Se communication method may be applied to M2M (Machine-to-Machine) communication, MTC (Machine Type Co ⁇ unicat ion).
- ProSe is considered as a way to solve the burden of the base station due to the rapidly increasing data traffic.
- introduction of ProSe can reduce the procedure of the base station, decrease the power consumption of the devices participating in the ProSe, increase the data transmission speed, increase the capacity of the network, load balancing, cell coverage can be expected.
- An object of the present invention is to provide an efficient communication method when a packet switched handover is not needed when performing a RAT change in relation to a ProSe-based communication mechanism. Providing is a technical challenge.
- a method of changing a Radio Access Technology (RAT) of a first terminal in a wireless communication system may include: proximity service (Proximity) of the first terminal; Transmitting a user traffic session related information when it is recognized that the packet switched service will be stopped while performing a service (ProSe) communication; And changing, by the first terminal, to a target RAT in which PS service is not supported.
- Proximity proximity service
- ProSe service
- the target RAT is UTRAN (Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network) or GERAN (GSM (Global System for Mobile Communicat ion) / EDGE (Enhanced Data rates for Global Evolution) Radio Access Network).
- UTRAN Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network
- GERAN GSM (Global System for Mobile Communicat ion)
- EDGE Enhanced Data rates for Global Evolution
- the user traffic session may include an IP flow, an IP traffic, a PS service, a packet switched service, an IP connection, a bearer, and a PDN connection. connection).
- the method may further include transmitting the user traffic session related information to a second terminal that is a target of ProSe communication of the first terminal.
- the user traffic session related information may include: stopping the user traffic session; Release of the user traffic session, reason for stopping the user traffic session, switching information of the ProSe communication path, interruption information of the ProSe communication, release information of the ProSe communication, whether it exists in the network coverage of the second terminal, use of ProSe It may be characterized by including at least one of the impossible known.
- the method may further include transmitting a request message for switching the ProSe communication path to an infrastructure path.
- At least one of the release operation of the user traffic session, release of resources allocated to the user traffic session, release of the context related to the user traffic session, and deactivation of the user traffic session may be performed. It may be characterized by further performing.
- At least one of an interruption operation of the user traffic session, an interruption operation of resources allocated to the user traffic session, an interruption operation of the context related to the user traffic session, and an inactivation operation of the user traffic session may be characterized by further performing.
- the method may further include a step of bypassing the IP flow, which was the ProSe communication increase, to a wireless local area network (WLAN).
- WLAN wireless local area network
- the method may further include performing a voice call by performing a CSFB (Circuit Switched Fa 11-Back).
- CSFB Circuit Switched Fa 11-Back
- a terminal for changing a radio access technology (Radio Access Technology, RAT) in a wireless communication system
- the radio frequency unit (Radio Frequency Unit);
- the processor detects that a packet switched service will be interrupted while performing Proximity Service (ProSe) communication. Transmit relevant information, and perform a change to a target RAT which is not supported by the PS service.
- ProSe Proximity Service
- FIG. 1 is a diagram illustrating a schematic structure of an EPS (Evolved Packet System) including an Evolved Packet Core (EPC).
- EPS Evolved Packet System
- EPC Evolved Packet Core
- FIG. 2 is a diagram illustrating a default data path through which two UEs communicate in EPS.
- 3 is a diagram illustrating a direct mode data path between two UEs based on ProSe.
- FIG. 4 is a diagram illustrating a locally-routed data path between two UEs based on Pr oSe.
- FIG. 5 is a reference diagram for explaining an embodiment to which the present invention can be applied.
- FIG. 6 is a diagram illustrating a configuration of a preferred embodiment of a terminal device and a network node device according to an example of the present invention.
- each component or feature may be considered to be optional unless otherwise stated.
- Each component or feature may be implemented in a form that is not combined with other components or features.
- some components and / or features may be combined to form an embodiment of the present invention.
- the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment, or may be replaced with other components or features of another embodiment.
- Embodiments of the present invention may be supported by standard documents disclosed in connection with at least one of the Institute of Electrical and Electronics Engineers (EEE) 802 series system, 3GPP system, 3GPP LTE and LTE-A system, and 3GPP2 system. That is, steps or parts which are not described in order to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in this document can be described by the above standard document.
- EEE Institute of Electrical and Electronics Engineers
- Evolved Packet System A network system consisting of EKXEvolved Packet Core (IP) based packet switched core network and access networks such as LTE and UTRAN.
- IP EKXEvolved Packet Core
- UMTS is an evolutionary network.
- [34]-eNodeB base station of LTE. It is installed outdoors and its coverage is macro cell size.
- [35]-UE User Equipment: a user device.
- the UE may be referred to in terms of terminal, mobile equipment (ME), mobile station (MS), and the like.
- the UE may be a portable device such as a laptop, a mobile phone, a PDMPersonal Digital Assistant), a smart phone, a multimedia device, or may be a non-portable device such as a PCXPersonal Computer) or an in-vehicle device.
- the UE is a UE capable of communicating in a 3GPP spectrum such as LTE and / or non-3GPP spectrum such as WiFi, spectrum for public safety.
- Proximity Services or Proximi ty-based Services discovery between physically close devices, and direct communication with each other.
- user plane data is exchanged through a direct data path (direct data path or direct mode data path) without going through a 3GPP core network (eg, EPC).
- a device-to-device service Also called a device-to-device service.
- Proximity Whether a UE is in proximity to the Darron UE is determined depending on whether a predetermined proximity criterion is satisfied. Proximity criteria may be given differently for ProSe discovery and ProSe communication. In addition, the proximity criteria may be set to be controlled by the operator.
- [39]-ProSe Co ⁇ unication communication between adjacent UEs performed through a communication path established between UEs.
- the communication path may be established directly between UEs or may be routed through local base station (eNodeB) (s).
- eNodeB local base station
- [41]-ProSe-enabled Network A network that supports ProSe discovery and / or ProSe communication. Hereinafter referred to as a network.
- ProSe Group Co-unicat ion A method for establishing a common communication path between Proximity Services capable terminals, and two or more Proximity Service-enabled terminals (ProSe—enabled). It refers to one-to-many proximity service communication between UEs.
- Proximity service encodeable public safety UE.
- Proximity service encodeable public A type of relay that acts as a communication relay between a public safety UE and a proximity service-enabled network using E-UTRA.
- Proximity Service UE-to-UE Relay Proximity service is a public safety UE capable of proximity service and a public safety terminal capable of proximity service. A type of relay that acts as a proximity service communication relay between UEs.
- [47]- ⁇ (Radio Access Network): A unit including a NodeB, an eNodeB and a Radio Network Controller (RNC) for controlling them in a 3GPP network. It exists between the UE and the core network and provides a connection to the core network.
- RNC Radio Network Controller
- HLR Home Location Registrar
- HSS Home Subscriber Server
- PLMN Public Land Mobile Network
- NAS Non-Access Stratum
- a functional layer for transmitting and receiving signaling and traffic messages between a UE and a core network in a UMTS protocol stack. The main function is to support mobility of the UE and to support session management procedures for establishing and maintaining an IP connection between the UE and the PDN GWCPacket Data Network Gateway.
- CPE Customer Premises Equipment
- UTRAN UMTS Terrestrial Radio Access Network
- CPE Customer Premises Equipment
- E-UTRAN Evo 1 ved-UTRAN
- PLMN Public Land Mobile Network
- [55]-LIPACLocal IP Access An IP capable UE access to an entity with another IP function in the same residential / enterprise IP network via H (e) NB. LIPA traffic does not cross the operator network. In the 3GPP Release-10 system, it provides access to resources on a local network (ie, a network located in a customer's home or company premises) via H (e) NB.
- a local network ie, a network located in a customer's home or company premises
- the service provider supports the handover of the user traffic by selecting a packet data network GateWay (PGW) that is physically close to the UE in the EPC network.
- PGW packet data network GateWay
- PDN Packet Data Network
- IP address one IPv4 address and / or one IPv6 prefix
- APN Access Point Name
- EPC Evolved Packet Core
- FIG. 1 is a diagram illustrating a schematic structure of an EPS (Evolved Packet System) including an EPCXEvolved Packet Core (EPCX).
- EPS Evolved Packet System
- EPCX Evolved Packet Core
- EPC is a key element of System Architecture Evolution (SAE) to improve the performance of 3GPP technologies.
- SAE is a research project to determine the network structure supporting 'mobility between various kinds of networks.
- SAE aims to provide an optimized packet-based system, for example, to support various wireless access technologies based on IP and to provide improved data transmission capability.
- EPC is a core network (Core Network) of the IP mobile communication system for the 3GPP LTE system, and can support packet-based real-time and non-real-time services.
- Core Network Core Network
- the core network can be divided into two distinct sub-domains: CS Circuit—switched for voice and Packet-switched (PS) for data. The function was implemented.
- PS Packet-switched
- the sub-domains of CS and PS are unified into one IP domain.
- a connection between a terminal having an IP capability and the terminal may include an IP-based base station (eg, eNodeBC evolved Node B), an EPC, an application domain (eg, I SCIP Multimedia Subsystem)). It can be configured through. That is, EPC is an essential structure for implementing end-to-end IP service.
- IP-based base station eg, eNodeBC evolved Node B
- EPC an application domain
- I SCIP Multimedia Subsystem I SCIP Multimedia Subsystem
- the EPC may include various components.
- the EPC may include some Serving Gateway (SGW), PDN GW (Packet Data Network Gateway), Mobility Management Entity (E), and Serving GPRS (SGSN). (General Packet Radio Service) Supporting Node (ePDG), and enhanced Packet Data Gateway (ePDG).
- SGW Serving Gateway
- PDN GW Packet Data Network Gateway
- E Mobility Management Entity
- SGSN Serving GPRS
- SGSN Serving GPRS Supporting Node
- ePDG enhanced Packet Data Gateway
- the SGW is an element that acts as a boundary point between the radio access network (RAN) and the core network and maintains a data path between the eNodeB and the PDN GW.
- the SGW serves as a local mobility anchor point. That is, packets may be routed through the SGW for mobility in the E-UTRA (Evolved—UMTSOJniversal Mobile Telecommunications System) Terrestrial Radio Access Network defined in 3GPP Release-8 or later.
- E-UTRA Evolved—UMTSOJniversal Mobile Telecommunications System
- SGW also supports other 3GPP networks (RANs defined before 3GPP releases—8, for example, UTRAN or GERAN (Global System for Mobile Communication (GSM) / Enhanced Data rates for Global Evolution (EDGE) Radio Access Network). It can also function as an anchor point for mobility to and.
- GSM Global System for Mobile Communication
- EDGE Enhanced Data rates for Global Evolution
- the PDN GW corresponds to the termination point of the data interface towards the packet data network.
- the PDN GW may support policy enforcement features, packet filtering, charging support, and the like.
- mobility between 3GPP networks and non-3GPP networks for example, untrusted networks such as Interworking Wireless Local Area Networks (i-WLANs), trusted networks such as Code Division Multiple Access (CDMA) networks or WiMax). Can serve as an anchor point for management.
- untrusted networks such as Interworking Wireless Local Area Networks (i-WLANs)
- trusted networks such as Code Division Multiple Access (CDMA) networks or WiMax).
- CDMA Code Division Multiple Access
- ⁇ E performs signaling and control functions to support access to the network connection, allocation of network resources, tracking, paging, roaming and handover, etc. of the UE It is an element.
- E controls the control plane functions related to subscriber and session management.
- ⁇ E manages a number of eNodeBs and performs signaling for the selection of a conventional gateway for handover to other 2G / 3G networks.
- E performs functions such as security procedures, terminal-to-network session handling, and idle terminal location management.
- SGSN handles all packet data, such as user child management and authentication for other 3GPP networks (eg GPRS networks).
- 3GPP networks eg GPRS networks.
- the ePDG serves as a secure node for untrusted non-3GPP networks (eg, I-WLAN, WiFi " hotspots, etc.”).
- untrusted non-3GPP networks eg, I-WLAN, WiFi " hotspots, etc.”
- a terminal having IP capability is provided by an operator (ie, an operator) via various elements in the EPC, as well as 3GPP access as well as non-3GPP access.
- Access to an IP service network eg, IMS.
- FIG. 1 illustrates various reference points (eg, Sl-U, S1 ⁇ ⁇ E, etc.).
- a conceptual link is defined as a reference point connecting two functions existing in different functional entities of E—UTRAN and EPC.
- Table 1 below summarizes the reference points shown in FIG. 1.
- This reference point can be used within PL ⁇ -or PLMN- (for example in case of inter-PLI handover) (It
- This reference point can be used intra-PLMN or inter ⁇ PLMN (eg in the case of Inter-PLMN HO). ''
- a reference point for user plane tunneling and tunnel management between the SGW and the PDN GW Due to UE mobility and for the required PDN connectivity, a connection to the PDN GW where the SGW is not located is required
- it provides user plane tunnel ing and tunnel management between Serving GW and PDN GW.It is used for Serving GW relocation due to UE mobility
- the present invention proposes a control mechanism for supporting ProSe or D2D service in a mobile communication system such as 3GPP EPS (Evolved Packet System).
- 3GPP EPS Evolved Packet System
- ProSe's possible uses include commercial / social services, network offload, public safety, and integration of existing infrastructure services (this is a reachability and mobility aspect). To ensure the consistency of the user experience, including)).
- public safety in the absence of E-UTRAN coverage (in this case, subject to compliance with local regulatory and operator policies, and limited to specific frequency bands and specific terminals designated for public safety). Use cases and possible requirements are under discussion.
- ProSe which is a progress in 3GPP, indicates that proximity-based applications / services are provided via LTE or WLAN, and that discovery and communication between devices are performed under the control of an operator / network. Assume
- FIG. 2 is a diagram illustrating a default data path in which two UEs communicate in EPS, that is, FIG. 2 is a diagram of L1E- in a general case in which ProSe between UE-1 and UE-2 is not applied.
- An example data path between 1 and UE-2 is shown. This basic path goes through the base station (ie eNodeB or Horae eNodeB) and gateway nodes (ie EPC or operator network).
- base station ie eNodeB or Horae eNodeB
- gateway nodes ie EPC or operator network.
- FIG. 2 when UE-1 and UE-2 exchange data, data from UE-1 passes through eNodeB-1, S-GW / P-GW, and eNodeB-2.
- UE # 1 and UE-2 are camped on different eNodeBs, but may be camped on to the same eNodeB.
- FIG. 2 shows that two UEs receive services from the same S-GW and P-GW, various combinations of services are possible. That is, they can receive services from the same S-GW and different P-GWs, from different S-GWs and from the same P-GW, or from different GWs and from different P ⁇ s. have.
- FIG. 3 is a diagram illustrating a direct mode data path between two RSs based on ProSe. This direct mode communication path does not go through the base station (ie eNodeB or Home eNodeB) and gateway nodes (ie EPC).
- base station ie eNodeB or Home eNodeB
- gateway nodes ie EPC
- FIG. 3 (a) shows data through a direct mode communication path while UE-1 and UE # 2 are camping on different eNodeBs (ie, eNodeB-1 and eNodeB-2). Illustrates the case of giving and receiving.
- FIG. 3 (b) exemplarily illustrates a case where UE # 1 and UE-2 camping on the same eNodeB (ie, eNodeB-1) exchange data via a direct mode communication path.
- the data path of the user plane is formed directly between the UE without passing through the base station or gateway node, as shown in Figure 3, it is noted that the control plane path may be formed through the base station and the core network Should be.
- the control information exchanged through the control plane path may be information related to session management, authentication, authorization, security, billing, and the like.
- the control information for UE-1 is transmitted to the control node of the core network via the eNodeB-1 (eg, E), and control information for UE-2 may be exchanged with a control node (eg, E) of the core network via the eNodeB-2.
- the control information for UE-1 and UE-2 is transmitted to the control node of the core network via eNodeB-1 (eg, For example, E).
- FIG. 4 is a diagram illustrating a locally-routed data path between two UEs based on ProSe.
- the ProSe communication data path between UE-1 and IE-2 is formed via eNodeB— 1, but does not go through a gateway node (ie, EPC) operated by an operator.
- the control plane path when the local routing method data path of the UEs served by the same eNodeB as shown in Figure 4, the control information for the UE-1 and UE-2 via the eNodeB-1 of the core network It can be exchanged with a control node (eg ⁇ E).
- a control node eg ⁇ E
- 3 and 4 may be referred to as a direct data path, a data path for ProSe, a ProSe-based data path, or a ProSe communication path.
- communication through such a direct data path may be referred to as direct communication, ProSe communication, or ProSe based communication.
- At least one UE of two UEs communicating in an E-UTRA ProSe communication path performs a radio access technology change (RAT change) to GERAN or UTRAN.
- RAT change radio access technology change
- the proximity service is provided through the spectrum for E-UTRAN, WLAN, and public safety.
- the UE camps on the GERAN or the UTRAN, the proximity service is provided.
- the present invention proposes a mechanism for efficiently providing proximity-based services in a mobile communication system such as 3GPP EPS (Evoled Packet System). Scenarios to be solved in the present invention are as follows. In other words,
- At least one UE of the two UEs communicating in the E-UTRA ProSe communication path performs CSFB to GERAN without PS handover
- the CSFB scenario specifically includes a CSFB scenario for a voice call (Mobi ie Originated, Mobi ie Teraii te), when the UE changes the RAT from E-UTRA to UTRAN or GERAN due to the CSFB procedure.
- Mobi ie Originated, Mobi ie Teraii te a voice call
- the proximity-based service provision mechanism proposed by the present invention is described below.
- It consists of a combination of one or more of the actions to be performed.
- the operations 1) to 5) proposed by the present invention will be described in detail.
- first UE performs CSFB / SRVCC without PS handover during communication through E-UTRA ProSe communication path
- first UE performs CSFB / SRVCC without PS handover during communication through E-UTRA ProSe communication path
- the target RAT ie, GERAN or UT AN
- a UE performing CSFB / SRVCC without PS handover (hereinafter referred to as the 1st IE) during communication in the E-UT
- a ProSe communication path S (hereinafter, referred to as the first IE) is the communication certificate or the use certificate of the other U £ of ProSe communication.
- Stop for one of IP flow ii) IP traffic, iii) PS service, iv) IP connection, v) bearer, vi) PDN connection Determines whether to suspend or release. If there is more than one IP flow / IP traffic / PS service / IP connection / bearer / PDN connection in communication or in use, different decisions may be made for each.
- the above determination may be a) communicating with a counterpart UE in ProSe communication or using an IP flow / IP traffic / PS service / IP connection / bearer / PDN connection in use witness, b) and / or communicating with a counterpart UE in ProSe communication. Or QoS characteristics of the IP follower / IP traffic / PS service / IP connection / bearer / PDN connection in use, c) and / or configuration information (which may be set by at least one of the UE and the carrier certificate). D) and / or information received from the network, e) and / or user preferences, 0 and / or operator policy, g) and / or the counterpart UE of ProSe communication is within network coverage. Whether the counterpart UE is being serviced by E-UTRAN, h) and / or the type of application (appl icat ion) in communication with the counterpart UE of ProSe communication.
- a UE (hereinafter, referred to as a first UE) that performs CSFB / SRVCC without PS handover on a communication certificate through an E-UTRA ProSe communication path may be referred to a counterpart UE (hereinafter, referred to as a second UE) of ProSe communication.
- a counterpart UE hereinafter, referred to as a second UE
- the information below may be transmitted to the counterpart UE at any time before performing the RAT change, after the first UE knows that the PS handover is not supported or not performed.
- iii) information on the reason for suspension / release in relation to the suspension / release for example, CSFB, SRVCC, RAT change, no PS handover, etc. It may be provided as.
- the above-described information that the first UE explicitly or implicitly transmits to the second UE, iv), V), vi) information is the communication certificate with the UE that the first UE is a ProSe communication counterpart; It may be associated with information about the IP flow / IP traffic / PS service / IP connection / bearer / PDN connection in use.
- the information explicitly or implicitly transmitted by the first UE to the second UE may include the IP flow / IP traffic / PS in which the JE is communicating with or using the counterpart UE of the ProSe communication. If there is more than one service / IP connection / bearer / PDN connection, different information may be transmitted to the counterpart UE for each other, in which case the same information may be duplicated or included in a common form. For example, if the first UE has two IP pulleys with the other UE, and ProSe communication, the E ⁇ UTRA ProSe communication path is set up for the IP pulley # 1. Information for switching to the E-UTRA ProSe communication path may be transmitted for IP flow # 2. In the above example, IP flow # 1 and IP flow # 2 are specified. Which bearer , Bearer # 2, IP traffic # 1, IP traffic # 2, etc. can be variously interpreted. This can be applied throughout the present invention.
- a UE ie, a first UE performing CSFB / SRVCC without PS handover during communication through an E-UTRA ProSe communication path may provide the above-described information block to a counterpart UE (ie, a second UE) of ProSe communication. In addition, it can transmit various information related to suspend / release of ProSe communication.
- Various information related to the suspend / release of the PfoSe communication may include: i) control message / AS control message / NAS control message / SIP (Session Initiation Protocol) message or It may be transmitted through a control message for ProSe defined for the present invention, or ii) may be transmitted by being included in a header of user data or a header of an ACK message confirming receipt of user data.
- the above information may be transmitted in the form of each or in combination with each other.
- the message itself transmitted by the first UE to the second UE may indicate (implicitly) the information.
- a UE ie, a first UE performing CSFB / SRVCC without PS handover during communication on an E-UTRA ProSe transmission path may communicate with or communicate with a counterpart UE of ProSe communication with IP flow / IP traffic / PS service. Perform one of the following operations 1-3) to 1-6) according to the method of processing the / IP connection / bearer. If the first UE is a communication proof of the correspondent ⁇ of ProSe communication and a plurality of ⁇ flows, and the methods for processing the same are different, one or more operations 1-3) to 1-6) may be appropriately performed accordingly. . For example, if three IP flows are being communicated, operations 1 to 3) may be performed for IP pull # 1 and IP flow # 2, and operations 1 to 5) may be performed for IP flow # 3.
- the first I additionally communicates to the user 1E (the second UE) / packet service / data service / D2D service / ProSe May be (temporarily) stopped / ProSe may perform an action (not temporarily) indicating that it is unavailable.
- the first UE may be configured to display a suitable message to the user regarding the communication with the counterpart UE.
- An E-UTRA ProSe communication path is an infrastructure for establishing a ProSe communication path by a UE serving a CSFB / SRVCC without PS handover (hereinafter, referred to as a first UE) serving itself. Send a message asking you to switch to the infrastructure path.
- the above request is simply performed in the infrastructure path Onirastnicture path, i) bearer / PDN connection, ii) or bearer / PDN connection context It may be at least one of requesting to update bearer / PDN connection-related context information that generates, hi) or maintains (context) information.
- the user traffic session may be requested to move from the ProSe communication path to an infrastructure path (ie, communication persistence after moving).
- the request message (that is, the message requesting the first UE to switch the ProSe communication path to the infrastructure path to the E) is a conventional message that the UE sends to the E. It may be a new message.
- the UE may send the request to a network node other than 'E'.
- RAN node e.g. eNodeB, etc.
- core network node e.g. S—GW, P-GW, PCRF, HSS, ANDSF, Proximity Node / Server / Function / Entity, etc.
- IMS Node P-CSCF
- S-CSCF S-CSCF
- Application Server etc.
- the first UE additionally releases i) bearer / IP connection / PDN connection used for ProSe communication, ii) and / or releases resources allocated to bearer / IP connection / PDN connection, iii) and / or Releases the context related to the bearer / IP connection / PDN connection, and iv) and / or deactivates the bearer / IP connection / PDN connection.
- a UE (hereinafter, referred to as a first UE) that performs CSFB / SRVCC without PS handover during communication through an E-UTRA ProSe communication path may perform i) bearer / IP connection / PDN connection used for ProSe communication. Suspend, ii) suspend resources allocated to and / or bearer / IP connections / PDN connections, and / or increase the context associated with the bearer / IP connections / PDN connections, iv) and / or bearers / IP connection / disable PDN connection may perform an operation of deactivating : the first UE may additionally transmit a message indicating the operation to an MME serving itself.
- a UE (hereinafter, referred to as a first UE) that performs CSFB / SRVCC without PS handover during communication through an E-UTRA ProSe communication path may perform i) bearer / IP connection / PDN connection used for ProSe communication. Release, ii) release the resources allocated to the bearer / IP connection / PDN connection, iii) release the context associated with the bearer / IP connection / PDN connection, iv) and / or bearer / ⁇ Deactivate a connection / PDM connection.
- the first UE may additionally transmit a message indicating the operation to the MME serving itself.
- a UE (hereinafter, referred to as a first UE) that performs CSFB / SRVCC without PS handover during communication through an E-UTRA ProSe communication path bypasses IP pulleys during ProSe communication to WLAN.
- the WLAN bypass may be an EPOrouted form or a non-seamless WLAN offloading (NSftO) form.
- the bypass operation to the WLAN may be performed before the first UE performs a RAT change or may be performed after the RAT change.
- the operation of transmitting a message to UE # E specified in the above-described operations 1-3) to 1-5) may be transmitted as one message.
- the first UE needs to send a message specified in operation 1-3) to IP flow # 1 for IP flow # 1, and a message specified in operation 1 ⁇ 5) for IP pulley # 2.
- information related to operations 1-3 and 1-5) may be included and sent to E.
- the second UE that has received the complete information from the first UE may include: i) the received information, ii) and / or configuration information (which is the UE and / or the business). Set by the user), iii) and / or information received from the network, 1V ) and / or the user's preference, v) and / or operator policy, etc. Perform one or more of the operations.
- the message transmitted by the first UE includes information for switching the E-UTRA ProSe communication path to an infrastructure path. If so, the second UE performs the above operation 1-3), and if the message transmitted by the first UE includes information for stopping the E-UTRA ProSe communication path, the second UE performs the above-described operation 1 -4) Perform the operation.
- the message transmitted by the first UE includes information for switching the E-UTRA ProSe communication path to the infrastructure path for the flow # 1, and for the IP flow # 2. If the UE includes information for releasing the E-UTRA ProSe communication path, the second UE performs operations 1-3) and operations 1-5).
- the second UE additionally informs the user of communication with the other UE (ie, the first UE) / packet service / data service / D2D service / ProSe (temporarily) proof / ProSe (temporarily) You can also perform an action that informs you that it is unavailable.
- the second UE may be configured to display an appropriate message to the user regarding communication with the counterpart IE.
- the first ⁇ E may perform one or more of the following with respect to the first UE.
- Bearer-related context information if any bearer-related context information stored in ProSe communication 3 ⁇ 4.
- Update context information For example, if the bearer records (marks) the bearer for the ProSe communication path in the bearer context information, a) changes the bearer for the infrastructure path (e.g., 3 ⁇ 4). Or b) or delete the special feature (e 3 ⁇ 4) of the bearer for the ProSe communication path.
- the first H E may perform one or more of the following on the ProSe communication counterpart UE (hereinafter, referred to as a second UE) of the first DE.
- the first UE E transmits the information described in operation 1-2) above (ie, information that the first UE transmits to the second UE) to the second UE.
- the first E may be directly performed when the ice is standing on the second UE.
- the other network node may explicitly or implicitly perform the operations i) and i) described in operation 3-2). Can be requested / forwarded.
- the above-described operations 3-1) and 3 ⁇ 2) may be performed by the E by receiving the request / notification message described in operations 1-3) to 1-5) from the first UE. And, if the information already on the ProSe communication of the first UE can be performed even if the request / notification message described in the above-described operations 1-3) to 1-5) is not received.
- E may be performed by recognizing that the first UE has performed CSFB or SRVCC or therefore needs to change RAT.
- the operation of the first ⁇ E may include information that is included in or intended by the request message received from the first UE described in operation 1-3) above, ⁇ ) and / or bearer.
- the operation of the first motion E causes interaction E to synchronize the synchronization of i) context information, ⁇ ) with S—GW and / or P ⁇ . ) May be included.
- the second UE E When the second UE E receives the request / notification message described in the above-described operations 1_3) to 1-5) from the second UE, the second UE E performs the above-described operation 3 1).
- the UE (hereinafter referred to as the first UE) that performs CSFB / SRVCC without PS handover during the communication through the E-UTRA ProSe communication path returns to the E-TORAN after ending the voice call.
- the first UE that performs CSFB / SRVCC without PS handover during the communication through the E-UTRA ProSe communication path returns to the E-TORAN after ending the voice call.
- the first UE checks whether ProSe communication is still possible with the second UE (eg, by way of discovery or the like).
- the first UE may transmit information indicating that the E-UTRA ProSe communication / E-UTRA ProSe communication path / ProSe communication is initiated to the second UE.
- the first UE may request the first MME to resume E-UTRA ProSe communication / E JTRA ProSe communication path / ProSe communication with the second UE. Thereafter, communication with the counterpart UE can be resumed through the ProSe communication path.
- the first UE performs an operation for resuming communication with the second UE to an infrastructure path. To do this, a message is sent to the MME requesting that the ProSe communication path be switched to the infrastructure path.
- a message is sent to the MME requesting that the ProSe communication path be switched to the infrastructure path.
- the proximity-based service providing mechanism may be applied to ProSe-assisted WLAN direct communication as well as ProSe E-UTRA communication.
- the proximity-based service providing mechanism is applied only to ProSe E-UTRA communication, and in case of WLAN direct communication with proximity service, the first UE transmits RAT from E ⁇ UTRAN to UTRAN or GERAN due to CSFB / SRVCC. Even if the change is made, the ProSe-assisted WLAN direct communication with the second UE may be continued without stopping.
- the present invention is not limited to the UTE / EPC network, but includes a 3GPP access network (eg, UTRAN / GERAN / E-UT AN) and a non-3GPP access network ( ⁇ , fLAN, etc.) for U1TS / EPS mobile communication. It can be applied system wide. In addition, it can be applied in all other wireless mobile communication system environments in the environment where control of other networks is applied.
- a 3GPP access network eg, UTRAN / GERAN / E-UT AN
- ⁇ , fLAN, etc. for U1TS / EPS mobile communication. It can be applied system wide. In addition, it can be applied in all other wireless mobile communication system environments in the environment where control of other networks is applied.
- FIG. 5 is a reference diagram for explaining a CSFB without PS handover supporting method for terminating ca] l of a terminal according to the embodiment of the present invention described above.
- a UE (hereinafter referred to as UE-1) performing CSFB / SRVCC without PS handover during communication through an E-UTRA ProSe communication path includes a ProSe counterpart UE (hereinafter referred to as UE # 2, not shown) and ProSe. Assume that you are communicating using a communication path.
- the MSCOtobUe Switching Center receives an MTdobile Terminating voice call to the UE-1 and transmits a paging request message to the MME.
- E sends a CS Service Notification message to inform UE-1 of the MT voice call.
- each RAT change operation will be described according to a time point at which the UE recognizes that the PS service is stopped or the PS bandwidth is not supported / performed according to the CSFB procedure.
- UE-1 may utilize the extended service request message of step lb of FIG. 5 to send the above-described request to #E. That is, by adding a new information element (Information Element) or a parameter to the extended service request message, it is possible to transmit the information related to the above-mentioned request to the operation 1 to 3).
- Information Element Information Element
- UE-1 receives a Cell Change Order message from the eNodeB, or releases an RRC connection from the eNodeB in step 3b of FIG. 5 or step 3c of FIG. 5.
- Release) message according to the present invention performs the above-described operation (ie operation 1) with respect to the UE performing the CSFB / SRVCC without PS handover during communication on the E-OTRA ProSe communication path.
- the UE- 1 may use an existing NAS message or a newly defined message for the present invention to send the above-described request item to E. Further, when the UE-2 receives the message (eg, operation 1-2) sent by the UE-1 in operation 1) or 2) described above with reference to FIG. 5, the received UE-2 receives the received message. The equalization of the ProSe communication counterpart UE of UE-1 (ie, operation 2) is performed based on the message.
- operation 'E' serves an UE-1 based on the received message. That is, the operation 3x1) is performed.
- a UE (hereinafter, UE-1) that communicates with another UE (hereinafter, UE-2) through a ProSe communication path needs to perform a CSFB procedure for a voice can.
- the ProSe communication path between UE-1 and UE-2 is no longer valid after UE-1 has changed its RAT from E-UTRAN to UTRAN / GERAN.
- UE-1 changes the RAT from E-UTRAN to UTRAN / GERAN, UE-1 cannot perform ProSe related operations including path sweeping. If no switching is done to the chip, the communication between E-1 and UE-2 will stop abruptly and performance will drop overall.
- [E] for performing communication with another UE through a ProSe communication path may operate as follows. ⁇ Before changing RAT from E-UTRAN to UTRAN / GERAN during CSFB procedure for voice calO
- the UE (ie, UE # 1) performs a path switching procedure to change the user traffic session from the ProSe communication path to the EPC path.
- This path switching procedure sends a path switching request to network 0, ii) and / or ProSe traffic. Send message / information for path switching to the peer UE of the scene.
- the UE may postpone initiation of the RAT change or CSFB procedure until the path switching procedure ends (in Section 3 ⁇ 4 of the IE).
- FIG. 6 is a diagram showing the configuration of a preferred embodiment for a terminal device and a network node device according to an example of the present invention.
- the terminal device 100 may include transmission / reception modules 110, a processor 120, and a memory 130.
- the transmission and reception modules ⁇ may be configured to transmit various signals, data and information to an external device, and to receive various signals, data and information to an external device.
- the terminal device 100 may be connected to the external device by wire and / or without wire.
- the processor 120 may control operations of the entire terminal device 100, and may be configured to perform the function of the terminal device 100 to process and process information to be transmitted and received with an external device.
- the memory 130 may store the processed information and the like for a predetermined time, and may be replaced with a component such as a buffer (not shown).
- the terminal device 100 may be configured to participate in ProSe according to a result of detecting ProSe availability or ProSe terminal discovery initiated by a network.
- the processor 120 of the terminal device 100 may be configured to transmit ProSe basic information to the network node 200 using the transmission / reception modules 110.
- Processor 120> using the transmission and reception modeul 110 may be made whether or not permitted from the network node (200) ProSe to receive instruction information.
- the processor 120 may be configured to process signaling for performing a direct data path setup with another terminal device.
- the processor 120 may be configured to perform direct communication with the other terminal device using the transmission / reception module 110.
- the processor 120 may be configured to transmit ProSe related result information to the network node 200 device by using the transmission / reception modules 110.
- the network node device 200 may include a transmission / reception module 210, a processor 220, and a memory 230 *.
- the transmission and reception module 210 transmits various signals, data, and information to an external device, and sends various signals, It may be configured to receive data and information.
- the network node device 200 may be connected to an external device by wire and / or wirelessly.
- the processor 220 may control the overall operation of the network node device 200, and may be configured to perform a function of calculating and processing information to be transmitted and received with the external device.
- the memory 230 may store the computed information and the like for a predetermined time and may be replaced with a component such as a buffer (not shown).
- the network node device 200 may be configured to support ProSe between a plurality of terminals.
- the processor 220 of the network node device 200 may be configured to receive ProSe basic information from the terminal device 100 or another network node device using the transmission / reception modules 210.
- the processor 120 may be configured to transmit ProSe grant indication information to the terminal device 100 using the transmission / reception module 210.
- the processor 220 may be configured to process signaling to support the terminal device 100 to perform a data path setup directly with another terminal device.
- the processor 220 may be configured to receive ProSe performance related determination information from the terminal device 100 using the transmission / reception modules 210.
- the specific configuration of the terminal device 100 and the network device 200 as described above may be implemented so that the above-described information described in various embodiments of the present invention can be applied independently or two or more embodiments are applied at the same time. Duplicate content is omitted for clarity.
- embodiments of the present invention can be implemented through various means.
- embodiments of the present invention may be implemented by hardware, firmware (fir) are, software or a combination thereof.
- the method according to the embodiments of the present invention may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), and Programmable PLDs.
- ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- Programmable PLDs Programmable PLDs.
- Logic Devices Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.
- the method according to the embodiments of the present invention may include a module, a procedure, a function, etc. that perform the functions or operations described above. It can be implemented in the form of.
- the software code can be stored in the memory unit and driven by the processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
Abstract
Description
Claims
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JP2015561279A JP6117951B2 (ja) | 2013-03-14 | 2014-03-13 | 近接サービス基盤の無線接続方式変更方法及び装置 |
KR1020157022890A KR101761632B1 (ko) | 2013-03-14 | 2014-03-13 | 근접 서비스 기반의 무선 접속 방식 변경 방법 및 장치 |
CN201480014772.9A CN105191411B (zh) | 2013-03-14 | 2014-03-13 | 用于改变基于接近服务的无线接入技术的方法和装置 |
EP14763802.7A EP2975882B1 (en) | 2013-03-14 | 2014-03-13 | Method and apparatus for changing proximity service-based radio access technology |
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KR20120090456A (ko) * | 2011-02-08 | 2012-08-17 | 삼성전자주식회사 | 통신시스템에서 단말의 프로파일을 제공하기 위한 시스템 및 방법 |
KR20120103070A (ko) * | 2011-03-09 | 2012-09-19 | 한국전자통신연구원 | 패킷 호 설정 방법 및 장치 |
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CN112512029A (zh) * | 2014-10-03 | 2021-03-16 | 交互数字专利控股公司 | 用于ProSe通信的方法、基站及WTRU |
WO2017026772A1 (ko) * | 2015-08-09 | 2017-02-16 | 엘지전자 주식회사 | 무선 통신 시스템에서 p-cscf 선택 및 sip 메시지 전송 방법 및 이를 위한 장치 |
US10587656B2 (en) | 2015-08-09 | 2020-03-10 | Lg Electronics Inc. | Method for selecting P-CSCF and transmitting SIP message in wireless communication system and device for same |
CN108307457A (zh) * | 2016-10-10 | 2018-07-20 | 电信科学技术研究院 | 一种消息路由的方法及装置 |
CN108401273A (zh) * | 2017-02-06 | 2018-08-14 | 电信科学技术研究院 | 一种路由方法和装置 |
CN108401273B (zh) * | 2017-02-06 | 2020-04-17 | 电信科学技术研究院 | 一种路由方法和装置 |
US11612006B2 (en) | 2017-02-06 | 2023-03-21 | Datang Mobile Communications Equipment Co., Ltd. | Routing method and device |
Also Published As
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US20160007257A1 (en) | 2016-01-07 |
CN105191411B (zh) | 2019-06-04 |
JP6117951B2 (ja) | 2017-04-19 |
EP2975882A4 (en) | 2016-11-02 |
KR20150137051A (ko) | 2015-12-08 |
US9603072B2 (en) | 2017-03-21 |
KR101761632B1 (ko) | 2017-07-26 |
EP2975882B1 (en) | 2018-07-25 |
JP2016513904A (ja) | 2016-05-16 |
EP2975882A1 (en) | 2016-01-20 |
CN105191411A (zh) | 2015-12-23 |
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