WO2014206302A1 - 模式切换方法及装置 - Google Patents
模式切换方法及装置 Download PDFInfo
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- WO2014206302A1 WO2014206302A1 PCT/CN2014/080763 CN2014080763W WO2014206302A1 WO 2014206302 A1 WO2014206302 A1 WO 2014206302A1 CN 2014080763 W CN2014080763 W CN 2014080763W WO 2014206302 A1 WO2014206302 A1 WO 2014206302A1
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- communication
- mode
- mode switching
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- base station
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/23—Manipulation of direct-mode connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/03—Reselecting a link using a direct mode connection
- H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to the field of communications, and in particular to a mode switching method and apparatus.
- BACKGROUND OF THE INVENTION With the development of wireless multimedia services, the demand for high data rates and user experiences is increasing, and higher requirements are placed on the system capacity and coverage of traditional cellular networks.
- the traditional base station-centric cellular network has obvious limitations in supporting high data rates and proximity services.
- D2D Device-to-Device, device to the new direction of future communication technology development
- Equipment came into being.
- the application of D2D technology can reduce the burden on the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
- D2D technology can work in licensed or unlicensed bands, allowing multiple D2D-enabled user equipment (D2D User Equipment, D2D UE) to directly discover without network infrastructure or network infrastructure.
- D2D technology usually includes D2D discovery technology and D2D communication technology: D2D discovery technology refers to determining/determining the proximity between two or more D2D user devices (for example, within the scope of direct D2D communication) or for judging / Technique for determining that the first user equipment is adjacent to the second user equipment.
- D2D user equipment can discover each other by sending or receiving discovery signals/information.
- the network can assist D2D user equipment to perform D2D discovery;
- D2D communication technology refers to partial or complete communication between D2D user equipments.
- a technology in which data can communicate directly without going through a network infrastructure.
- the mutual discovery and communication between user equipments supporting D2D functions is not static and will change with the relative movement of the UE.
- data session communication is established between UE1 and UE2 supporting D2D functions, and the data flow is forwarded through the infrastructure of the cellular network.
- the distance between UE1 and UE2 is gradually approaching to the discovery and D2D communication capable of supporting D2D.
- the data flow between UE1 and UE2 can be switched from the cellular communication mode to the D2D communication mode, thereby enjoying the advantages of high D2D communication rate, low delay, and energy saving.
- the data session between UE1 and UE2 needs to be switched back from the D2D communication mode to the cellular mode when the D2D communication link is unavailable.
- the system requires that the user does not perceive mode switching during mode switching under network infrastructure control to ensure service continuity.
- a mode switching method including: a first base station sending a message including mode switching information to a first user equipment UE, and triggering, by the first UE, a mode carried in the mode switching information Instructions, mode switching.
- the method further includes: determining, by the first base station, that the first UE meets a mode switching condition, where A base station is a serving base station of the first UE.
- the determining, by the first base station, that the first UE meets the mode switching condition comprises: sending, by the first base station, a first mode switching request to a mobility management entity or a device through server; the first base station receiving the mobile a first mode switch response message sent by the management entity or the device through server, where the first mode switch response message is used to indicate that the first UE meets a mode switch condition; or the first base station receives the And a message sent by the mobility management entity or the device through server to the first base station to indicate that the first user equipment performs mode switching.
- the determining, by the first base station, the mobility management entity or the device through server, whether the first user equipment UE meets the mode switching condition comprises: determining that the first UE meets the handover from the cellular communication mode to the device when the following conditions are met a straight-through communication mode: the first UE supports a device through-communication function or performs device-through communication authorization authentication, and the first UE and the second UE perform cellular communication, where the first UE and the second UE are adjacent to each other.
- the device communicates directly between the first UE and the second UE, and has sufficient cellular communication air interface and backbone Linking resources; performing device direct communication between the first UE and the second UE, where the first UE and the second UE are not in a neighboring relationship, and have sufficient cellular communication air interface and backbone link resources;
- the two UEs refer to one of the following: a UE that has established cellular communication with the first UE, and a UE that has established device direct communication with the first UE.
- the first base station configures, for the first UE, a signal measurement of the second UE, and according to the measurement report of the first UE, Determining whether the device direct communication link quality threshold is met, and if yes, determining a relationship between the first UE and the second UE, otherwise determining that the first UE is not in a neighboring relationship with the second UE; Or the first base station determines, according to the received signal measurement result of the first UE that is sent by the first UE that is sent by the first UE, that is, the second mode switch request information, whether the device meets the quality threshold of the through link communication link.
- the first base station acquires from a network side entity Determining whether the distance between the first UE and the second UE meets the device direct communication distance threshold if the first UE is adjacent to the second UE, and if yes, The first UE is in a neighboring relationship with the second UE, otherwise, determining that the first UE is not in a neighboring relationship with the second UE; or the first base station acquiring the first from the network side entity Determining, by using the geographic location information or the distance information of the UE and the second UE, whether the distance between the first UE and the second UE meets the device direct communication distance threshold, and if yes, determining the first a UE is in a neighboring relationship with the second UE, otherwise, determining that the first UE is not in a neighboring relationship with the second UE; wherein, if the first UE and the second
- the message including the first mode switching request information includes at least one of the following: The identifier of the second UE, the signal measurement result of the first UE to the second UE, the signal measurement result of the first UE to the first base station, the cellular communication or the device by the first UE and the second UE.
- the network side entity comprises one of the following: a packet data gateway serving the user equipment, a service gateway, a mobility management entity, a device through server, a location information server, and an entity having a UE discovery detection function.
- the first base station determines whether there is sufficient device direct communication air interface resource for the first user equipment to perform device direct communication with the second user equipment, including: the first base station according to the first UE and the first The bearer information corresponding to the data flow of the UE for cellular communication and the data flow of the first UE and the second UE for performing cellular communication and the service quality information corresponding to the bearer, determining whether there is sufficient device direct communication resource support corresponding If the result of the judgment is that the device direct-through air interface resource can support the data flow of the first UE and the second UE to perform cellular communication, the first base station determines that there is sufficient device direct communication air interface resource.
- the first base station determines whether there is sufficient cellular communication air interface and backbone link resources to support corresponding cellular communication, where the first UE and the second UE perform the device-through communication data flow and the corresponding service quality information; If the cellular communication air interface and the backbone link resource can support the data flow and or the bearer of the device direct communication between the first UE and the second UE, the first base station determines that sufficient cellular communication air interface is satisfied and The backbone link resource is used for cellular communication between the first user equipment and the second user equipment.
- the first base station initiates mode switching of the first UE, including: Determining, by the second base station, that the second UE determines that the second UE meets a mode switching condition, where the first base station is different from the second base station, The first base station initiates a mode switch negotiation with the second base station to confirm whether the second user equipment satisfies the mode switching condition; if the second base station determines that the second UE meets the condition of the mode switching, the first Transmitting, by the base station and the second base station, a message including mode switching information requires the first UE and the second UE to perform mode switching.
- the method further includes: the first base station determining that the condition that the first base station sends the mode switching reject message is: the first base station receiving the mode switching reject message sent by the first UE
- the mode switch reject message includes reject reason indication information.
- the first base station initiates mode switching negotiation with the second base station, where: the first base station sends a message including mode switching negotiation request information to the second base station; and the second base station receives the mode switching negotiation request information.
- the second base station determines, by the message, whether the second UE meets a condition of switching from a mode; if the second UE meets a mode switching condition, the second base station sends a message including mode switching negotiation request acknowledgement information to the first base station, otherwise The second base station sends a message including the mode switch negotiation failure information to the first base station, where the mode switch negotiation failure information carries a failure cause indication; if the first base station receives the message including the mode switch negotiation request acknowledgement information, the mode The handover negotiation succeeds; after the first base station sends a message including the mode handover negotiation request information to the second base station, the first base station sends a message including the mode handover negotiation cancellation information to the second base station, and cancels the ongoing mode switching negotiation.
- the message including the mode switching negotiation request information may carry one or any combination of the following information: a first user equipment identifier, a second user equipment identifier, and a first user equipment and a second user equipment supported by the first base station
- the bearer information corresponding to the data flow of the cellular communication/device through communication, the data flow of the first user equipment and the second user equipment supported by the first base station, and the corresponding service quality information, the first user Whether the device establishes a corresponding device through communication/cellular communication bearer with the second user equipment and or the first user equipment and the second user equipment need to establish an indication of the device through communication/cellular communication bearer, and the first base station configures the first user equipment
- the device direct communication resource mode, the device direct capability information of the first user equipment; the message including the mode switching negotiation request information may be displayed including the mode switching type;
- the method further includes: the switching mode is
- the first base station or the mobility management entity Pass-through device includes a second message server receives mode switching request information sent by the first UE.
- the mode tendency information comprises: preferentially adopting the device through communication mode, preferentially adopting the cellular communication mode, and having no tendency.
- the range of the mode tendency information includes at least one of the following:
- the mode preference information is stored as a subscription information of the UE on an HSS or a device through server, and the mode tendency information is configured and modified by its corresponding UE.
- the second mode switching request is directly sent by using dedicated signaling or indirectly by measuring a report message.
- the information including the first mode switching request and the second mode switching request information includes at least one of: an identifier of the second UE, a signal measurement result of the first UE to the second UE, And the first UE and the second UE perform the cellular communication or the device direct communication, the first UE and the second UE perform the cellular communication, or the The bearer information corresponding to the data flow of the device through communication, the data flow and/or the service quality information corresponding to the data flow and/or the bearer of the first UE and the second UE performing the cellular communication or the device direct communication, the first Whether the UE is established with the second UE And establishing a data bearer of the device through communication and/or a data bearer between the first UE and the second UE that needs to establish the through communication.
- the first mode switching request information and the second mode switching request information include information of a second base station, where the second base station is a serving base station of the second UE.
- a mode switching method including: receiving, by a first user equipment, a message that is sent by a first base station, that includes mode switching information, where the first base station is the first UE The serving base station performs mode switching according to the indication information of the mode carried in the mode switching information.
- the mode switching comprises: switching from a cellular communication mode to a device through communication mode and switching from the device through communication mode to the cellular communication mode.
- the first UE before performing the mode switching according to the indication information of the mode carried in the mode switching message, further includes: determining, by the first UE, that the cellular communication is satisfied according to the receiving the mode switching message The mode is switched to a condition of the device through communication mode switching; the first UE determines, according to the received mode switching message, whether a condition for switching from the device through communication mode to the cellular communication mode is satisfied.
- the first UE receives the mode switching message, and determining whether the condition for switching from the cellular communication mode to the device direct communication mode switching is satisfied includes: determining, by the first UE, whether the device through communication function is supported and/or whether the device passes the device.
- the mode switching information includes: a mode switching indication, a user equipment identifier, a data flow and/or bearer information of the device through communication for mode switching, a data flow and/or bearer information of the cellular communication for performing mode switching.
- the mode switching message carries at least one of the following: the first UE and the second UE perform resource configuration information of device through communication; Device direct communication/cellular communication bearer setup and configuration information, used by the first UE to establish a device through communication/cellular bearer with the second UE; updated TFT information.
- the message including the mode switching information is carried by RRC reconfiguration signaling or other proprietary signaling, and the mode switching information may be transmitted through the access sublayer or through the protocol data unit of the non-access sublayer.
- the first UE performs mode switching according to the indication information included in the mode switching information, including: the data flow and/or bearer information of the device direct communication/cellular communication according to the mode indicated by the mode switching information, by the first UE, Determining whether to establish a cellular communication data bearer/device through communication data bearer or determining whether to modify the cellular communication data bearer/device through communication data bearer; if the first UE does not establish the cellular communication/device through communication data bearer, The first
- the first UE establishes the cellular communication data bearer/device through communication data bearer and the first UE acquires updated TFT information And the first UE switches the data stream and/or the data bearer of the device through communication indicated by the mode switching information, or the data stream and/or the data bearer of the cellular communication to the indication information of the mode switching information.
- Corresponding bearer communication in a case that the first UE needs to modify the cellular communication/device direct communication data bearer, the first UE initiates an operation of modifying a data bearer; further, the cellular communication data bearer/ The device through communication data bearer includes configuration information corresponding to the PDCP, the RLC, the MAC entity, and the logical channel.
- the method further includes: the first UE transmitting a message including mode switching completion information to the first base station; or the first UE initiating a data bearer of the device through communication/cellular communication indicated by the release mode switching information.
- the communication data bearer indicated by the first UE to establish the mode switching information includes: for from a cellular communication to a device through Mode switching of the communication, the first UE directly establishes a communication data bearer with the second device device through the first base station or directly updates the TFT information; and performs mode switching for the direct communication from the device to the cellular communication, at the first UE and
- the first UE requests to establish a cellular communication data bearer and update TFT information.
- the first UE switches the data stream and/or the data bearer of the device through communication indicated by the mode switching information, or the data stream and/or the data bearer of the cellular communication to the indication of the mode switching information.
- Communicating the bearer corresponding to the information includes: for mode switching from cellular communication to device through communication, the first UE uses the configuration of the first base station to be scheduled by the first base station or the device directly through the first UE to contend for communication resources through the device
- the through communication data bearer performs device through communication of the data flow of the first UE and the second UE indicated by the mode switching message; for mode switching from the device through communication to the cellular communication, the first UE is according to the first base station
- the scheduled cellular communication resource performs cellular communication on the data stream of the first UE and the second UE indicated by the mode switching information by using a cellular communication data bearer.
- a mode switching apparatus is further provided, which is applied to a first base station, and includes: a sending module, configured to send a message including mode switching information to a first user equipment UE, triggering the first UE Mode switching is performed according to the indication information of the mode carried in the mode switching information.
- the method further includes: a first determining module, configured to determine whether the first UE meets a condition of mode switching, where the first base station is a serving base station of the first UE.
- the first determining module includes: a second sending module, configured to send a message including the first mode switching request information to the mobility management entity or the device through server; and the receiving module is configured to receive the mobile management entity or the And the message that the mode switch response information is sent by the device through the server, where the mode switch response information is used to indicate that the first UE meets the condition of the mode switch.
- a second sending module configured to send a message including the first mode switching request information to the mobility management entity or the device through server
- the receiving module is configured to receive the mobile management entity or the And the message that the mode switch response information is sent by the device through the server, where the mode switch response information is used to indicate that the first UE meets the condition of the mode switch.
- the first determining module includes: a second determining module, configured to: when the first condition is met, determining that the first UE meets a mode of switching from a cellular communication mode to a device through communication mode: the first UE supports device through a communication function; performing cellular data communication between the first UE and the second UE; The first UE and the second UE are in a neighboring relationship; there is sufficient device direct communication air interface resource for the first UE and the second UE to perform device through communication; the third determining module is set to be in When the at least one of the following conditions is met, determining that the first UE meets a slave direct communication mode to a cellular communication mode: performing device through data communication between the first UE and the second UE; having sufficient cellular communication air interface and backbone Linking the resource; the first UE and the second UE are no longer in a contiguous relationship; wherein the second UE refers to one of the following: establishing cellular communication with the first UE and establishing the device with the first UE
- the method further includes: a first acquiring module, configured to: before the first determining module determines whether the first user equipment UE meets the condition of mode switching, and in the switching mode: switching from the cellular communication mode to When the device is in the direct communication mode, acquiring the mode tendency information of the first UE indicates that the device through communication mode is preferentially adopted; and/or one of the following conditions: the first base station receives the first UE sending a message containing the second mode switching request information; the packet data network management, the serving gateway, and/or the first base station performing network offloading.
- a first acquiring module configured to: before the first determining module determines whether the first user equipment UE meets the condition of mode switching, and in the switching mode: switching from the cellular communication mode to When the device is in the direct communication mode, acquiring the mode tendency information of the first UE indicates that the device through communication mode is preferentially adopted; and/or one of the following conditions: the first base station receives the first UE sending a message containing the second mode switching request information; the
- the second obtaining module is configured to: before the first determining module determines whether the first user equipment UE meets the condition of the mode switching, and the switching mode is: when the device direct communication mode is switched to the cellular communication mode And acquiring, by the first base station, the mode tendency information of the first UE to preferentially adopt the cellular communication mode; and/or, the first base station receiving the second mode switching request sent by the first UE Information message.
- the mode tendency information comprises: preferentially adopting the device through communication mode, preferentially adopting the cellular communication mode, and having no tendency.
- the range of the mode tendency information includes at least one of the following:
- the mode preference information is stored as a subscription information of the UE on the HSS or the device through server, and the mode tendency information is configured and modified by its corresponding UE.
- the first mode switching request and the second mode switching request are directly sent by using dedicated signaling or sent by measuring a report message.
- the first mode switching request information and the second mode switching request information include at least one of: an identifier of the second UE, a signal measurement result of the first UE to the second UE, And the first UE and the second UE perform the cellular communication or the device direct communication, the first UE and the second UE perform the cellular communication, or the The bearer information corresponding to the data flow of the device through communication, the data flow and/or the service quality information corresponding to the data flow and/or the bearer of the first UE and the second UE performing the cellular communication or the device direct communication, the first Whether the data bearer of the device through communication is established between the UE and the second UE, and/or the data bearer of the through communication needs to be established between the first UE and the second UE.
- the first mode switching request information and the second mode switching request information include information of a second base station, where the second base station is a serving base station of the second UE.
- a mode switching apparatus is further provided, which is applied to a first UE, and includes: a receiving module, configured to receive a message that includes mode switching information sent by a first base station, where the first base station A serving base station of the first UE; the switching module is configured to perform mode switching according to the indication information of the mode carried in the mode switching information.
- the mode switching comprises: switching from a cellular communication mode to a device through communication mode and switching from the device through communication mode to the cellular communication mode.
- the method further includes: a fourth determining module, configured to determine, according to the received mode switching information, whether a condition for switching from the cellular communication mode to the device through communication mode is satisfied; the fifth determining module is configured to receive according to the received The mode switching information determines whether a condition for switching from the device through communication mode to the cellular communication mode is satisfied.
- the first base station sends a message including mode switching information to the first UE, and triggers the first UE to perform mode switching according to the indication information of the mode carried in the mode switching information.
- the invention solves the problem that the mode switching is inflexible and the service continuity is relatively poor, and the effect of improving the overall throughput of the system is achieved.
- FIG. 1 is a first flowchart of a mode switching method according to an embodiment of the present invention
- FIG. 2 is a second flowchart of a mode switching method according to an embodiment of the present invention
- FIG. 4 is a first structural block diagram of a mode switching device according to an embodiment of the present invention
- FIG. 5 is a second structural block diagram of a mode switching device according to an embodiment of the present invention
- FIG. 7 is a schematic diagram of mode switching of a device through mode according to an embodiment of the present invention
- FIG. 8 is a flowchart of a mode switching method according to a preferred embodiment of the present invention
- 9 is a flow chart of a mode switching air interface initiated by a UE according to an embodiment of the present invention
- FIG. 10 is a flowchart of a mode switching air interface initiated by e B according to an embodiment of the present invention
- FIG. 11 is a mode switching initiated by a UE according to an embodiment of the present invention.
- FIG. 12 is a flowchart of a mode switching negotiation air interface initiated by e B according to an embodiment of the present invention
- FIG. 12 is a flowchart of a mode switching negotiation air interface initiated by e B according to an embodiment of the present invention
- FIG. 12 is a flowchart of a mode switching negotiation air interface initiated by e B according to an
- FIG. 20 is a flowchart of mode switching according to Example 4 according to an embodiment of the present invention.
- 21 is a mode switching flowchart of Example 5 according to an embodiment of the present invention;
- FIG. 22 is a mode switching flowchart of Example 6 according to an embodiment of the present invention;
- FIG. 23 is a mode switching procedure of Example 7 according to an embodiment of the present invention;
- Figure 24 is a flowchart of mode switching negotiation by neighboring e B according to an embodiment of the present invention;
- Figure 25 is a flowchart of adjacent e B cancel mode switching negotiation according to an embodiment of the present invention;
- FIG. 27 is a flowchart of mode switching negotiation by neighboring e Bs through an MME according to an embodiment of the present invention;
- FIG. 28 is a flowchart of an embodiment of the present invention according to an embodiment of the present invention
- FIG. 29 is a flowchart of a mode switching of Example 9 according to an embodiment of the present invention
- FIG. 30 is a flowchart of Example 10 according to an embodiment of the present invention.
- Mode switching flowchart. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a first flowchart of a mode switching method according to an embodiment of the present invention. As shown in FIG.
- the method mainly includes the following steps (step S102): Step S102: A base station sends a message including mode switching information to the first UE, and triggers the first UE to perform mode switching according to the indication information of the mode carried in the mode switching information.
- Step S102 A base station sends a message including mode switching information to the first UE, and triggers the first UE to perform mode switching according to the indication information of the mode carried in the mode switching information.
- the method further includes: the first base station determining that the first UE meets a mode switching condition, where the first base station is The serving base station of the first UE.
- the first base station may determine, by using the following manner, that the first UE meets the condition of mode switching: mode 1: the first base station sends a first mode switching request to the mobility management entity or the device through server; A base station receives a first mode switch response message sent by the mobility management entity or the device through server, where the first mode switch response message is used to indicate that the first UE meets a condition for mode switching.
- Manner 2 The first base station receives a message sent by the mobility management entity or the device through server to the first base station to indicate that the first user equipment performs mode switching.
- the determining, by the first base station, the mobility management entity, or the device through server, whether the first user equipment UE meets the mode switching condition includes: determining that the first UE meets the slave cell when the following conditions are met
- the communication mode is switched to the device through communication mode: the first UE supports the device through communication function or the device through communication authorization authentication, and the first UE and the second UE perform cellular communication, the first UE and the The second UE is a neighboring relationship, and there is sufficient device direct communication air interface resource for the first UE and the second UE to perform device through communication.
- the device communicates directly between the first UE and the second UE, and has sufficient cellular communication air interface and backbone Linking resources; performing device direct communication between the first UE and the second UE, where the first UE and the second UE are not in a neighboring relationship, and have sufficient cellular communication air interface and backbone link resources;
- the two UEs refer to one of the following: a UE that has established cellular communication with the first UE, and a UE that has established device direct communication with the first UE.
- the first base station can determine whether the first user equipment and the second user equipment are in a neighboring relationship: the first base station configures a signal measurement of the second UE for the first UE, and according to the first UE Determining whether the first UE is adjacent to the second UE, if not, determining whether the first UE and the second UE are not adjacent.
- Proximity relationship Determining, by the first base station, the signal measurement result of the second UE carried by the first UE that is sent by the first UE that is sent by the first mode, and determining whether the quality threshold of the device through communication link is met; If yes, determining that the first UE is adjacent to the second UE, otherwise determining that the first UE is not in a neighboring relationship with the second UE; or the first base station acquiring the Determining, by the information of whether the first UE is adjacent to the second UE, whether the distance between the first UE and the second UE meets the device direct communication distance threshold, and if yes, determining the first The UE is in a neighboring relationship with the second UE, otherwise, determining that the first UE is not in a neighboring relationship with the second UE; or the first base station acquires the first UE and the first entity from the network side entity Determining, by the geographic location information or the distance information of the second UE, whether the distance between the first UE and the second UE meets
- the first mode switching request information may include at least one of the following: an identifier of the second UE, a signal measurement result of the first UE to the second UE, and the first UE pair a signal measurement result of a base station, an indication that the first UE and the second UE perform cellular communication or device through communication, and a data flow corresponding to the first UE and the second UE performing the cellular communication or the device through communication
- the bearer information, the first UE and the second UE perform the data communication of the cellular communication or the device through communication, and/or the corresponding quality of service information, whether the first UE and the second UE A data bearer of the device through communication is established between the UEs and/or a data bearer that needs to establish the through communication between the first UE and the second UE.
- the network side entity comprises one of the following: a packet data gateway serving the user equipment, a service gateway, a mobility management entity, a device through server, a location information server, and an entity having a UE discovery detection function.
- the first UE determines whether there is sufficient device direct communication air interface resource for the first user equipment to perform device direct communication with the second user equipment, including: The first base station according to the bearer information corresponding to the data flow in which the first UE and the second UE perform cellular communication, and the data flow and or bearer corresponding to the first UE and the second UE performing cellular communication
- the service quality information is used to determine whether there is sufficient device direct communication resource to support the corresponding device through communication; if the judgment result is that the device direct air interface resource can support the data flow of the first UE and the second UE for cellular communication,
- the first base station determines that there is sufficient device direct communication air interface resource for the first user equipment to perform device direct communication with the second user equipment.
- the first base station may determine whether there is sufficient cellular communication air interface and backbone link resources by: the first base station corresponding to the data flow of the device direct communication according to the first UE and the second UE The bearer information and the data flow of the first UE and the second UE performing the device through communication and the corresponding service quality information, determine whether there are enough cellular communication air interfaces and backbone link resources to support the corresponding cellular communication; And if the cellular communication air interface and the backbone link resource can support the data flow and the bearer of the device direct communication between the first UE and the second UE, the first base station determines that sufficient cellular communication air interface is satisfied And the backbone link resource is used for cellular communication between the first user equipment and the second user equipment.
- the first base station initiating the mode switching of the first UE in the step S102 may be implemented by: the first base station determining the second base station, and determining, by the second base station, Whether the second UE meets the condition of the mode switching, wherein, if the first base station is different from the second base station, the first base station initiates mode switching negotiation with the second base station to confirm whether the second user equipment is satisfied. a condition of the mode switching; if the second base station determines that the second UE satisfies the condition of the mode switching, the first base station and the second base station send a mode switching message requesting the first UE and the second UE to execute the mode Switch.
- the first base station may send a message of the protection mode handover rejection information by: the first base station receiving the first UE sending The protection mode switches the message of the rejection information, where the mode switching rejection information includes the rejection reason indication information.
- the first base station may initiate mode switching negotiation with the second base station by: sending, by the first base station, a message of the protection mode switching negotiation request information to the second base station; Negotiating the message of the request information, determining whether the second UE meets the condition of the mode switching; if the second UE meets the mode switching condition, the second base station sends a message including the mode switching negotiation request acknowledgement information to the first a base station, or the second base station sends a message including the mode switching negotiation failure information to the first base station, where the mode switching negotiation failure information carries a failure cause indication; if the first base station receives the message including the mode switching negotiation request acknowledgement information, The mode switching negotiation is successful; the first base station sends a mode After the message of the handover negotiation request information is sent to the second base station, the message including the mode handover negotiation cancellation information is sent to the second base station, and the ongoing mode switching negotiation is cancelled.
- the switching mode is: when the device is switched from the device direct communication mode to the cellular communication mode, the first base station or the mobility management entity or the device through server obtains the mode tendency information of the first UE to indicate priority And adopting the cellular communication mode; and/or, the first base station or the mobility management entity or the device through server receives the message that is sent by the first UE and includes the second mode switching request information.
- the mode tendency information comprises: preferentially adopting the device through communication mode, preferentially adopting the cellular communication mode, and having no tendency.
- the range of the mode preference information includes at least one of the following: a UE level, an application level, a data flow level, and a bearer level.
- the mode preference information is stored as a subscription information of the UE on the HSS or the device through server, and the mode tendency information is configured and modified by its corresponding UE.
- the second mode switching request is directly sent through dedicated signaling or indirectly transmitted through measurement reporting messages.
- the first mode switching request information and the second mode switching request information include at least one of: an identifier of the second UE, a signal measurement result of the first UE to the second UE, And the first UE and the second UE perform the cellular communication or the device direct communication, the first UE and the second UE perform the cellular communication, or the The bearer information corresponding to the data flow of the device through communication, the data flow and/or the service quality information corresponding to the data flow and/or the bearer of the first UE and the second UE performing the cellular communication or the device direct communication, the first Whether the data bearer of the device through communication is established between the UE and the second UE, and/or the data bearer of the through communication needs to be established between the first UE and the second UE.
- the first mode switching request information and the second mode switching request information include information of a second base station, where the second base station is a serving base station of the second UE.
- This embodiment provides a mode switching method.
- FIG. 2 is a second flowchart of a mode switching method according to an embodiment of the present invention. As shown in FIG. 2, the method mainly includes the following steps (step S202 to step S204): S202: The first UE receives the message that is sent by the first base station and includes the mode switching information, where the first base station is the serving base station of the first UE. Step S204: the first UE according to the indication of the mode carried in the mode switching information Information, mode switching.
- the mode switching comprises: switching from a cellular communication mode to a device through communication mode and switching from the device through communication mode to the cellular communication mode.
- the method before the step S204, the method further includes: determining, by the first UE, whether a condition for switching from the cellular communication mode to the device through communication mode is satisfied according to the message that the mode switching information is received; The first UE determines, according to the received mode switching information, whether a condition for switching from a device through communication mode to a cellular communication mode is satisfied.
- the first UE receives the message including the mode switching information, and determines whether the condition for switching from the cellular communication mode to the device direct communication mode is satisfied: the first UE determines whether the device direct communication function is supported; A UE determines whether there is sufficient device direct communication resource for the first user equipment to perform device direct communication with the second user equipment.
- the mode switching information may include: a mode switching indication, a user equipment identity, a data flow and/or bearer information of the device through communication for mode switching, a data flow of the cellular communication for mode switching, and/or bearer information.
- the first UE initiates an operation of modifying a data bearer, in a case that the first UE needs to modify the cellular communication/device through communication data bearer.
- the method further includes: the first UE sends a mode handover complete message to the first base station; and the first UE initiates a data bearer of the device through communication/cellular communication indicated by the release mode switching information.
- the communication data bearer that the first UE establishes the mode switching message includes: The mode switching of the cellular communication to the device through communication, the first UE establishes a device through communication data bearer and directly updates the TFT information through the first base station or directly with the second device.
- the first UE requests to establish a cellular communication data bearer and update the TFT information.
- the first UE switches the data stream and/or the data bearer of the device through communication indicated by the mode switching information, or the data stream and/or the data bearer of the cellular communication to the indication of the mode switching information.
- Communicating the bearer corresponding to the information includes: for mode switching from cellular communication to device through communication, the first UE uses the first base station scheduling/configuration or the device direct communication resource negotiated by the first UE and the second UE And performing, by the device direct communication data bearer, the data flow of the first UE and the second UE indicated by the mode switching information to perform device through communication; for mode switching from the device direct communication to the cellular communication, the first UE according to the first
- the cellular communication resource scheduled by a base station performs cellular communication on the data stream of the first UE and the second UE indicated by the mode switching information by using a cellular communication data bearer.
- FIG. 3 is a first structural block diagram of a mode switching device according to an embodiment of the present invention.
- the device includes: a sending module 32, configured to be directed to a first user equipment.
- the UE sends a message including the mode switching information, and triggers the first UE to perform mode switching according to the indication information of the mode carried in the mode switching information.
- FIG. 4 is a first block diagram of a first mode of the mode switching apparatus according to the embodiment of the present invention.
- the method further includes: a first determining module 42 configured to determine whether the first UE meets the condition of mode switching, where The first base station is a serving base station of the first UE.
- FIG. 5 is a second structural block diagram of the mode switching device according to the embodiment of the present invention.
- the device includes: a receiving module 52, which is configured.
- FIG. 6 is a block diagram of a preferred second structure of the mode switching apparatus according to the embodiment of the present invention.
- the method further includes: a fourth determining module 62, configured to determine whether the content is satisfied according to the received mode switching information.
- the cellular communication mode is switched to the condition of the device through communication mode switching; the fifth determining module 64 is configured to determine whether the condition for switching from the device through communication mode to the cellular communication mode is satisfied according to the received message including the mode switching information.
- Preferred Embodiment 1 This preferred embodiment provides a device switching mode device mode switching method, and FIG. 8 is a flowchart of a mode switching method according to a preferred embodiment of the present invention. As shown in FIG. 8, the method includes steps S802 and S804. .
- Step S802 The first user equipment receives a mode switching message.
- Step S804 The first user equipment performs mode switching according to the indication information included in the mode switching message.
- the mode comprises: a cellular communication mode, and a device through communication mode.
- the mode switching includes two types: switching from the cellular communication mode to the device through communication mode, and switching from the device through communication mode to the cellular communication mode.
- the method before the first user equipment receives the mode switching message, the method further includes: determining, by the first base station, whether the first user equipment meets the condition of the mode switching, and if the condition is met, the first base station initiates a mode switching; Satisfying the condition, the first base station may select a transmit mode handover reject message.
- the first base station refers to a serving base station of the first user equipment.
- the first base station determines whether the first user equipment meets the condition for mode switching, and further includes: the first base station sends a mode switching request to the mobility management entity or the device through server; the mobile management entity or the device through server Receiving a mode switching request, determining whether the condition of the mode switching is met, if yes, transmitting a mode switching response message to the first base station, otherwise transmitting a mode switching reject message to the first base station; if the first base station receives the mode switching response message, The first base station considers that the first user equipment satisfies the condition of mode switching.
- the first base station or the mobility management entity or the device through server determines whether the first user equipment meets the condition of switching from the cellular communication mode to the device through communication mode, and further includes: determining whether the first user equipment supports device through communication Determining whether the first user equipment is in communication with the second user equipment; determining whether the first user equipment is adjacent to the second user equipment; determining whether there is sufficient equipment direct communication air interface resource for the first user The device performs device direct communication with the second user device.
- the determining, by the first base station or the mobility management entity or the device through server, whether the first user equipment meets the handover from the device direct communication mode to the cellular communication mode comprises: determining whether the first user equipment is different from the second user equipment Performing device direct data communication; determining whether there is sufficient cellular communication air interface and backbone link resources; and/or determining whether the first user equipment is adjacent to the second user equipment; preferably, the second user equipment refers to the first user a user equipment with which the device is to establish a device for direct communication or a user device that has established a device to communicate with the first user device; preferably, the first base station or the mobility management entity or the device through server determines whether the first user equipment is satisfied.
- the method further includes: The first user equipment mode propensity information indicates that the device through communication mode is preferentially adopted; and or the first base station receives a mode switching request sent by the first user equipment; or the packet data gateway and/or the serving gateway and/or the base station performs network offloading
- the method further includes: the first user equipment mode preference information Instructing to preferentially adopt a cellular communication mode; and or the first base station receives a mode switching request sent by the first user equipment; preferably, the first user equipment mode tendency information further includes: preferentially adopting a device through communication mode, preferentially adopting a cellular a communication mode, and no tendency; the range of the first user equipment mode propensity information includes at least one of: a user equipment level, an application level, a data flow level
- the mode switching request message may be displayed including a mode switching type; preferably, the mode switching request message optionally includes the second base station information; preferably, the first user equipment and the first The bearer information corresponding to the data flow of the user equipment performing the cellular communication/device direct communication and the data flow of the first user equipment and the second user equipment for the cellular communication/device direct communication and the service quality information corresponding to the bearer correspond to the desired mode Partial data flow and or bearer
- the second base station refers to the serving base station of the second user equipment; preferably, the first base station determines whether the first user equipment performs cellular data communication with the second user equipment, and further includes: the first base station receives the The first user equipment and the second user equipment carried by the mode switching request information perform cellular communication indication to learn whether the first user equipment performs cellular data communication with the second user equipment; or the first base station communicates data packets with the served user equipment.
- the first base station determines whether the first user equipment performs device direct communication with the second user equipment, and further includes: the first base station carries the information according to the received mode switching request information. Setting the first user equipment and the second user equipment The direct communication indication indicates whether the first user equipment performs cellular data communication with the second user equipment, or the first base station learns whether the first user equipment performs direct communication with the second user equipment according to the saved context information of the first user equipment.
- the first base station acquires, from other network side entities, information about whether the first user equipment performs device direct communication with the second user equipment.
- the first base station determines whether the first user equipment is adjacent to the second user equipment, and the method includes: the first base station configures a signal measurement of the second user equipment for the first user equipment, and performs the measurement reporting according to the first user equipment.
- the first base station determines, according to the signal measurement result of the second user equipment, that the first user equipment carried by the received mode switching request message satisfies the device direct communication link quality threshold; If the content is satisfied, the first user equipment is adjacent to the second user equipment; if not, the first user equipment is not adjacent to the second user equipment; or the first base station acquires the first user equipment from the other network side entity.
- the first base station may obtain the geographical location information or the distance information of the first user equipment and the second user equipment from other network side entities, and determine whether the distance between the two users meets the device direct communication distance threshold, if satisfied, The first user equipment and the second user are considered If the first user equipment is adjacent to the second user equipment, the first base station considers that the first user equipment and the second user equipment are conditioned to perform the equipment. Direct communication; if not, the first base station considers that the first user equipment and the second user equipment can only perform cellular communication.
- the network side entity comprises one of: a packet data gateway serving a user equipment, a service gateway, a mobility management entity, a device through server, or another entity having a user equipment discovery detection function.
- the first base station determines whether there is sufficient device direct communication air interface resource for the first user equipment to perform device direct communication with the second user equipment, and further includes: the first base station according to the first user equipment and the second user equipment Carrying the bearer information corresponding to the data flow of the cellular communication and the data flow of the first user equipment and the second user equipment for performing cellular communication and the corresponding service quality information, determining whether there is sufficient device direct communication resource to support the corresponding device through communication If the device direct-through air interface resource can support all or part of the data flow of the first user equipment and the second user equipment for cellular communication, it is considered that the first base station considers that sufficient device direct communication air interface resources are satisfied for the first user equipment and the first The condition that the user equipment performs the device through communication, otherwise the condition is not satisfied.
- the first base station determines whether there are sufficient cellular communication air interface and backbone link resources, and further includes: And the first base station performs the bearer information corresponding to the data flow of the device direct communication and the data flow of the device communication and the corresponding service quality information of the first user equipment and the second user equipment according to the first user equipment and the second user equipment, Determine whether there are enough cellular communication air interfaces and backbone link resources to support the corresponding cellular communication.
- the cellular communication air interface and the backbone link resource can support all or part of the first user equipment and the second user equipment to perform data communication and bearer communication
- the first base station considers that there is sufficient cellular communication air interface.
- the backbone link resource is used for the condition that the first user equipment performs cellular communication with the second user equipment, otherwise the condition is not met.
- the first base station initiates mode switching of the first user equipment, the method further includes: determining, by the second base station, that the second base station determines, by the second base station, whether the second user equipment meets the condition of mode switching; Further, if the first base station is different from the second base station, the first base station initiates a mode switch negotiation with the second base station to confirm whether the second user equipment meets the condition of mode switching.
- the first base station and the second base station send a mode switching message requesting the first user equipment and the second user equipment to perform mode switching.
- the first base station may select a transmit mode handover reject message, and the method further includes: receiving, by the first base station, a mode switch request message sent by the first user equipment.
- the mode switch reject message includes reject reason indication information.
- the first base station initiates mode switching negotiation with the second base station, and further includes: the first base station sends a mode switching negotiation request message to the second base station; the second base station receives the mode switching negotiation request message, and determines the second user equipment.
- the second base station Whether the condition of switching from the mode is satisfied; if the second user equipment satisfies the mode switching condition, the second base station sends a mode switching negotiation request acknowledgement message to the first base station, otherwise the second base station sends a mode switch negotiation failure message to the first base station, mode
- the handover negotiation failure message carries a failure cause indication; if the first base station receives the mode handover negotiation request acknowledgement message, the mode switch negotiation is successful.
- the mode switching negotiation cancellation message may be sent to the second base station to cancel the ongoing mode switching negotiation.
- the first base station sends a mode switching negotiation request message.
- the second user equipment, the second user equipment and the second user equipment The bearer information corresponding to the data flow of the cellular communication/device through communication, the data flow of the first user equipment and the second user equipment supported by the first base station, and the corresponding service quality information, the first user Whether the device establishes a corresponding device through communication/cellular communication bearer with the second user equipment and or the first user equipment and the second user equipment need to establish an indication of the device through communication/cellular communication bearer, and the first base station can be the first user equipment Assigned device direct communication resources, first User equipment device pass-through capability information.
- the mode switching negotiation request message may display a mode switching type.
- the second base station determines whether the second user equipment meets the condition of switching from the cellular communication mode to the device through communication mode, and further includes: determining, by the second base station, whether the second user equipment supports the device through communication function; The base station determines whether there is sufficient device direct communication resource for the first user equipment to perform device through communication with the second user equipment.
- the condition that the second base station determines whether the second user equipment meets the slave direct communication mode to the cellular communication mode comprises: determining, by the second base station, whether there are sufficient air interface and backbone link resources.
- the second base station determines whether there is sufficient device direct communication air interface resource for the first user equipment to perform device direct communication with the second user equipment, and further includes: the second base station according to the received first user supported by the first base station The bearer information corresponding to the data flow of the device and the second user equipment, and the data flow of the first user equipment and the second user equipment for performing cellular communication, and/or the corresponding quality of service information and/or the first user equipment
- the serving base station can allocate the device direct communication communication port resource information to the first user equipment, and determine whether the corresponding resource is allocated to the second user equipment for device direct communication.
- the second base station determines whether there are sufficient air interface and backbone link resources, and further includes: the second base station performs data for device direct communication according to the received first user equipment and the second user equipment supported by the first base station.
- the bearer information corresponding to the flow and the data flow of the device communication and the corresponding service quality information of the first user equipment and the second user equipment are used to determine whether there are enough cellular communication air interfaces and backbone link resources to support the corresponding cellular communication. Further, if the cellular communication air interface and the backbone link resource can support all or part of the first user equipment and the second user equipment supported by the first base station to perform data communication and bearer communication, the second base station considers that the second base station considers A condition that sufficient cellular communication air interface and backbone link resources are used for cellular communication between the first user equipment and the second user equipment is satisfied, otherwise the condition is not met.
- the second base station sends a mode switching negotiation request acknowledgement message to the first base station
- the method further includes: the handover negotiation request acknowledgement message may include at least one or any combination of the following information: the first user equipment and the second user supported by the second base station
- the device performs the bearer information corresponding to the data flow of the device through communication/cellular communication
- the first user equipment and the second user equipment supported by the second base station perform the data flow of the device through communication/cellular communication and the corresponding service quality information
- the resource information allocated to the first user equipment and the second user equipment for device direct communication, and the capability information jointly supported by the first user equipment and the second user equipment.
- the handover negotiation request acknowledgement message may further include the following information: the first user equipment and the second user equipment that are not supported by the second base station perform bearer information corresponding to the data flow of the device direct communication/cellular communication, and the second base station does not support the The first user equipment and the second user equipment perform data flow of the device through communication/cellular communication and or bear corresponding service quality information.
- the second base station determines whether the second user equipment satisfies the mode switching condition, and may further include: the second base station sends a mode switching negotiation request message to the second user equipment; the second user equipment receives the mode switching negotiation request message, and determines whether The mode switching condition is met, and if yes, the mode switching negotiation request acknowledge message is sent, otherwise the mode switch negotiation failure message is sent, and the mode switch negotiation failure message includes a failure cause indication. If the second base station receives the mode switch negotiation request acknowledgement message, the second user equipment is considered to satisfy the condition of the mode switch.
- the mode switching negotiation request message may carry one or any combination of the following information: a first user equipment identifier, a data flow corresponding to the first user equipment supported by the first base station and the second user equipment performing cellular communication/device direct communication Carrying information, the first user equipment and the second user equipment supported by the first base station perform data communication of the cellular communication/device direct communication and the corresponding service quality information, and the first base station can allocate the device through communication for the first user equipment.
- the resource, the capability information of the first user equipment; further, the mode switching negotiation request message may display a mode switching type.
- the mode switching negotiation request acknowledgement message may include at least one or any combination of the following information: a first user equipment identifier, and data of the first user equipment and the second user equipment supported by the second user equipment for device through communication/cellular communication
- the bearer information corresponding to the flow, the data flow of the device direct communication/cellular communication and the corresponding service quality information of the first user equipment and the second user equipment supported by the second user equipment may be allocated to the first user equipment and the second
- the user equipment performs resource information of the device through communication, and the capability information supported by the first user equipment and the second user equipment.
- the mode switching negotiation request acknowledgement message may further include the following information: the first user equipment and the second user equipment that are not supported by the second user equipment perform bearer information corresponding to the data flow of the device direct communication/cellular communication, and the second user equipment The unsupported first user equipment and the second user equipment perform data flow of the device through communication/cellular communication and or bear corresponding service quality information.
- the second user equipment receives the mode switching request message, and determines whether the condition for switching from the cellular communication mode to the device direct communication mode switching is satisfied, further comprising: determining, by the second user equipment, whether the device direct communication function is supported and/or whether the device passes the device.
- the through-communication authorization authentication; the second user equipment determines whether there is sufficient device direct communication resource for the first user equipment to perform device direct communication with the second user equipment.
- the first base station and the second base station respectively send a mode switching message requesting the first user equipment and the second user equipment to perform mode switching, and the method further includes: the mode switching message includes the user equipment identifier, and the device direct communication/cellular communication is performed. Data flow and or bearer information.
- the mode switching message may carry resource configuration information of the first user equipment and the second user equipment for device through communication.
- the transmit mode switch message may carry the device through communication/cellular communication bearer setup information, and the first user equipment establishes a device through communication/cellular bearer with the second user equipment.
- the sending mode switching message may carry updated TFT information; preferably, the mode switching message may be carried by dedicated signaling or by RRC reconfiguration and other existing air interface signaling; the first user equipment according to the mode switching message Instructing information, performing mode switching, further comprising: determining, by the first user equipment, whether to establish or modify a corresponding cellular communication/device through communication according to the data flow of the device direct communication/cellular communication and the bearer information of the mode switching indicated by the mode switching message Data bearer; if the first user equipment has not established a corresponding cellular communication/device through communication data bearer, a corresponding communication data bearer is established.
- the first user equipment switches the data flow and or bearer of the device direct communication/cellular communication indicated by the mode switching message to the corresponding bearer for communication. If the first user equipment needs to modify the corresponding cellular communication/device through communication data bearer, then the modified data bearer is initiated. Further, the cellular communication data bearer/device through communication data bearer includes PDCP, RLC; and MAC entity and configuration information corresponding to the logical channel. Preferably, the first user equipment sends a mode handover complete message to the first base station. Optionally, the first user equipment initiates a data bearer of the device through communication/cellular communication indicated by the release mode switching message.
- the first user equipment if the first user equipment has not established a corresponding cellular communication/device through communication data bearer, establishing a corresponding communication data bearer, further comprising: for mode switching from cellular communication to device through communication, the first user equipment passes the a base station or directly establishing a device direct communication data bearer with the second device and updating the TFT information; For mode switching from device direct communication to cellular communication, if the first user equipment and the second user equipment have not established a cellular communication data bearer, the first user equipment requests to establish a cellular communication data bearer and update the TFT information.
- the first user equipment communicates the data flow and or the bearer of the device direct communication/cellular communication indicated by the mode switching message to the corresponding bearer, and further includes: for the mode switching from the cellular communication to the device through communication, the first user The device uses the first base station scheduling/configuration or the device direct communication communication resource negotiated by the first user equipment and the second user equipment to perform the data flow of the first user equipment and the second user equipment indicated by the mode switching message by using the device direct communication data bearer.
- Direct communication For the mode switching from the device through communication to the cellular communication, the first user equipment performs the cellular data flow of the first user equipment and the second user equipment indicated by the mode switching message by using the cellular communication data bearer according to the cellular communication resource scheduled by the first base station. Communication.
- the method further includes: receiving, by the first base station, a mode switch completion message, optionally, the first base station initiates release or modification of the switched device through communication/cellular communication Data hosting.
- a mode switch completion message optionally, the first base station initiates release or modification of the switched device through communication/cellular communication Data hosting.
- Preferred Embodiment 2 Whether switching from cellular communication to D2D communication mode or D2D communication to cellular communication mode, the system requires that the mode switching is not perceived by the user during mode switching under network infrastructure control to ensure service continuity.
- the present invention provides a device mode switching method for a device through system. Specifically, as shown in FIG. 2, the first user equipment receives the mode switching message, and then the first user equipment performs mode switching according to the indication information included in the mode switching message.
- Embodiment 1 provides a method for user equipment mode switching in a network coverage scenario.
- a feature of this embodiment is that the user equipment performing mode switching is under the coverage of the same base station.
- the signaling interaction between the user equipment and the base station and the base station and the core network element includes the following basic processes.
- the mode switching air interface process initiated by the UE is as shown in FIG. 9 and includes the following steps: Step S902: UE1 sends a mode switching request message to e B. Step S904: After receiving the message, e Bl determines whether the UE1 satisfies the condition of mode switching, and if yes, sends a mode switching message to the UE1. Step S906: After receiving the mode switching message, the UE1 performs mode switching, and after completing the mode switching, sends a mode switching completion message to the eNB.
- the mode switching air interface process initiated by the eNB is as shown in FIG. 10, and includes the following steps S1002 and S1004.
- Step S1002 The eNB1 sends a mode switching message to the UE1.
- Step S1004 After receiving the mode switching message, the UE1 performs mode switching, and after completing the mode switching, sends a mode switching completion message to the eNB.
- the air interface process of the mode switching failure initiated by the UE is as shown in FIG. 11, and includes the following steps S1102 to S1104.
- Step S1102 UE1 sends a mode switching request message to the eNB.
- Step S1104 After receiving the message, the eNB1 determines whether the UE1 meets the condition of mode switching, and if not, sends a mode switching reject message to the UE1.
- the air interface process of the mode switching negotiation initiated by the eNB is as shown in FIG. 12, and as shown in FIG. 12, the following steps S1202 to S1204 are included.
- Step S1202 The eNB sends a mode switching negotiation request to the UE1.
- Step S1204 UE1 determines whether the condition of mode switching is met, and if yes, sends a mode switch negotiation acknowledgement message to the eNB.
- the air interface process in which the eNB initiates mode switching negotiation fails is as shown in FIG. 13 and includes the following steps S1302 to S1304.
- Step S1302 The eNB sends a mode switching negotiation request to the UE1.
- Step S1304 UE1 determines whether the condition of mode switching is met, and if not, sends a mode switching negotiation failure message to e B.
- the e B usually needs to acquire the device pass-through attribute information of the UE, such as the mode tendency, the device direct communication capability, the location information of the UE node pair performing mode switching, or whether the UE node pair is adjacent. Information, the acquisition process of these information is shown in Figure 14 and Figure 15.
- 14 is a flowchart of an eNB acquiring a mode tendency and a device through communication capability information by using a UE context acquisition process according to an embodiment of the present invention. As shown in FIG. 14, the method includes the following steps S1402 and S1404.
- Step S1402 The MME sends an initial context setup request message to the eNB, where the message includes the context of the UE, and the context of the UE includes information such as the mode tendency of the UE and the device direct communication capability.
- Step S1404 After receiving the message, the eNB sends an initial context setup response message to the MME.
- 15 is a flowchart of an eNB acquiring UE device pass-through related information from an MME/D2D server or an HSS according to an embodiment of the present invention, where an eNB initially accesses a UE, or a UE requests a mode switch or an eNB actively initiates a mode switch detection.
- Step S1502 The eNB sends a UE device direct information request message to the MME or the D2D server or the HSS, and the message optionally indicates the type of information required.
- Step S1504 After receiving the message, the MME or the D2D server or the HSS sends a message corresponding to the UE device direct information to the e B, which may include the mode tendency of the UE, the device directly discovers the black table, the device communicates directly, and performs mode switching.
- the location information of the UE node pair or the information of whether the UE node pair is geographically adjacent.
- Step S1602 The eNB sends a mode switching request message to the MME/D2D server to the UE1.
- Step S1604 After receiving the message, the MME/D2D server determines whether the relevant UE satisfies the condition of mode switching. If yes, sends a mode switch response message to the eNB, otherwise sends a mode switch reject message to e B.
- the partial device pass-through attribute of the UE may be obtained by the eNB through the process of FIG. 15, such as mode preference, device direct communication capability, and the device pass-through attribute eNB of another part of the UE cannot be obtained, such as device pass-through discovery black table, UE node
- the MME/D2D server needs to perform the relevant decision through the flow of FIG. 16.
- the device through system mode switching method will be described in detail below by way of example 1 to example 7.
- Example 1 In a scenario with network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through.
- FIG. 17 is a flowchart of mode switching according to the embodiment 1 of the present invention. As shown in FIG. 17, the method includes the following steps: Step S1702: UE2 sends a D2D discovery signal to UE1.
- Step S1704 The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and performs measurement reporting if necessary.
- the measurement report message may include the identifier of the UE2, the signal measurement result of the UE2 to the UE2, the signal measurement result of the UE1 to the serving base station, the UE1 and the UE2, and the UE1 and the UE2 perform the bearer information corresponding to the data flow of the cellular communication,
- the UE1 and the UE2 perform data communication of the cellular communication and the corresponding service quality information, whether the UE1 establishes a corresponding device direct communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a device direct communication data bearer.
- the measurement report message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- Step S1706 UE1 performs measurement reporting on e Bl.
- Step S1708 After receiving the measurement report of the UE1, the eNB1 determines whether the condition of the mode switching is met. For example, it is found that the signal quality of the UE2 in the measurement report is good enough.
- the UE1 firstly adopts the device through communication mode (user equipment level priority refers to) at the user equipment level, and then triggers.
- Step S1710 The eNB1 controls to perform mode switching.
- the condition that the eNB1 determines whether the UE1 meets the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 supports the device through communication function, whether the UE1 performs cellular data communication with the UE2, whether the UE1 is adjacent to the UE2, and whether there are sufficient devices.
- the through communication communication air interface resource is used for UE1 and UE2 to perform device direct communication.
- the eNB1 determines that the UE1 supports the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS.
- e Bl may perform cellular communication indication according to UE1 and UE2 carried in the measurement report message to determine that cellular data communication is being performed between UE1 and UE2.
- the eNB1 determines that the UE1 satisfies the link quality threshold for performing device direct communication with the UE2 according to the measurement report of the UE1, and considers that the UE1 is adjacent to the UE2.
- the eNB1 determines whether there is sufficient device direct communication resource to support the corresponding device through communication according to the bearer information corresponding to the data flow of the cellular communication performed by the UE1 and the UE2, and the service data corresponding to the data flow and the bearer of the UE1 and the UE2. Assuming that the device direct-through air interface resource can support all or part of the data flow of the UE1 and the UE2 for cellular communication, the eNB1 considers that sufficient device direct-through communication air interface resources are satisfied for the UE1 and the UE2 to perform device-through communication. Next, eNB1 determines the serving base station of UE2, and the method of acquiring the serving base station of UE2 is not within the protection scope of this patent.
- the serving base station of UE2 is e Bl
- the eNB1 continues to determine whether the UE2 satisfies the condition of the mode switching, and specifically includes the eNB1 determining whether the UE2 supports the device through communication function, and the eNB1 may obtain the eNB/ProSe server or the HSS according to the MME/ProSe server or the HSS.
- the obtained UE device pass-through attribute information indicates that the UE2 supports the device through-communication capability.
- Step S1712 The UE1 and UE2 mode switching is completed.
- eNB1 sends a mode switching message to UE1 and UE2.
- the mode switch message contains the UE identity with which mode switching communication is required, the data stream and or bearer information of the cell communication for mode switching.
- the mode switching message may include resource configuration information of UE1 and UE2 for device direct communication, and is used for the scenario where the eNB1 allocates a dedicated resource or a dedicated resource pool for the device through communication for the UE1 and the UE2.
- the mode switch message may also carry the device direct communication bearer setup information, and the UE1 and the UE2 establish device pass-through. Communication bearer.
- the mode switch message may carry updated TFT information for mapping the cellular communication data streams of the original UE1 and UE2 from the cellular data bearer update to the device pass-through data bearer.
- the mode switch message here may be to design new air interface signaling or to carry over RRC reconfiguration and other existing air interface signaling bearers.
- the UE1 and the UE2 determine whether to establish a corresponding device through communication data bearer according to the data flow and the bearer information of the cellular communication that needs to perform mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data stream of the cellular communication indicated by the mode switching message to the corresponding device through communication data bearer. For mode switching from cellular communication to device through communication, UE1 performs device direct communication with UE2 using the device through communication resource configured by eNB1 in the mode switching message. After UE1 and UE2 complete the mode switching, an optional transmission mode switching completion message is sent to e Bl.
- e Bl may initiate release or modify the switched cellular communication data bearer. So far, the mode switching of the UE1 and UE2 from the cellular communication mode to the device through communication mode is completed.
- Example 2 In the scenario of network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through. Data session communication is established between UE1 and UE2, and its data flow is forwarded through the infrastructure of the cellular network. As UE1 gradually moves to the peripheral area of UE2, UE1 can detect the discovery signal transmitted by UE2. As the distance between UE1 and UE2 approaches, the measurement signal sent by UE1 detected by UE1 becomes stronger and stronger.
- FIG. 18 is a flowchart of mode switching of Example 2 according to an embodiment of the present invention. As shown in FIG. 18, steps S1802 through 1816 are included. Step S1802: UE2 sends a D2D discovery signal to UE1. Step S1804: The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and simultaneously determines whether
- Step S1806 Send a mode switching request.
- the mode switching request message may include the identifier of the UE2, the signal measurement result of the UE2 to the UE2, the UE1 and the UE2 perform the cellular communication indication, the UE1 and the UE2 perform the bearer information corresponding to the data flow of the cellular communication, and the UE1 and the UE2 perform the cellular communication.
- the data stream and the corresponding service quality information are carried, whether the UE1 establishes a corresponding device direct communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a device direct communication data bearer.
- the mode switching request message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- the mode switching request sent by the eNB1 to the mobility management entity or the device through server may include at least one of the following information or any combination: the identifiers of UE1 and UE2, the signal measurement result of UE1 to UE2, and the indication of cellular communication between UE1 and UE2, UE1 and UE2 perform bearer information corresponding to the data flow of the cellular communication, UE1 and UE2 perform the data flow of the cellular communication and the corresponding service quality information, and whether UE1 establishes the corresponding device direct communication data bearer with UE2 and UE1 and UE2 Need to establish equipment through communication data Instructions.
- the mode switching request message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- Step S1810 It is judged whether the condition of the mode switching is satisfied.
- the mobility management entity or the device through server receives the mode switching request and determines whether the condition of the mode switching is satisfied.
- the condition that the mobility management entity or the device through server determines whether the UE1 and the UE2 satisfy the handover from the cellular communication mode to the device through communication mode includes determining whether the UE1 supports the device through communication function.
- the mobility management entity or device pass-through server may also provide information to determine whether UE1 is in proximity to UE2.
- Step S1812 The transmission mode switching response.
- the mobility management entity or the device through server sends a mode switch response message to e Bl.
- e Bl receives the mode switch response message
- e Bl further determines whether UE1 and UE2 are adjacent and whether there is sufficient device direct communication resource for UE1 and UE2 to perform device through communication.
- the eNB1 determines that the UE1 satisfies the link quality threshold for performing device direct communication with the UE2 according to the discovery signal measurement carried by the mode switching request sent by the UE1, so that the UE1 is considered to be adjacent to the UE2.
- the mobile management entity or the device through server can obtain the geographical location information or the distance information of the UE1 and the UE2 from the location server, and determine whether the distance between the two devices meets the device direct communication distance threshold. If yes, the first user device and the second user device are considered. Adjacent, and transmitting the information to the eNB1 through a mode switch response message.
- the eNB1 may perform packet header detection on the served user equipment communication data packet, and determine, according to the source and destination address detection, that the UE1 and the UE2 perform cellular communication, and corresponding bearer information.
- the eNB determines whether there is sufficient device direct communication resources to support the corresponding device through communication according to the bearer information corresponding to the data flow of the cellular communication performed by the UE1 and the UE2 and the service data corresponding to the data flow and the bearer of the UE1 and the UE2. . Assuming that the device direct-through air interface resource can support all or part of the data flow of the UE1 and the UE2 for cellular communication, the eNB1 considers that there is sufficient device direct communication communication air interface resource for the UE1 to communicate with the UE2 for device direct communication. Step S1814: Perform mode switching.
- the eNB1 determines that the UE1 satisfies the condition of mode switching, and transmits a mode switching message to the UE1 and the UE2.
- the mode switch message contains the UE identity with which mode switch communication is required.
- the mode switching message may include the resource configuration information that the UE1 and the UE2 perform device through communication, and is used in the scenario where the eNB1 and the device through server allocate a dedicated resource or a dedicated resource pool for the device through communication for the UE1 and the UE2.
- the mode switch message may also carry the device direct communication bearer setup information, and the UE1 and the UE2 establish device pass-through. Communication bearer.
- the mode switch message may carry updated TFT information for mapping the original UE1 and UE2 cellular communication data streams from the cellular data bearer update to the device pass-through data bearer.
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- the UE1 and the UE2 determine whether to establish a corresponding device through communication data bearer according to the data flow and the bearer information of the cellular communication that is required to perform mode switching indicated by the mode switching message. If the corresponding bearer has not been established, the UE1 and the UE2 directly establish a device direct communication data bearer and update the TFT information through the eNB1, and then switch the data flow of the cellular communication indicated by the mode switching message to the corresponding device through communication data bearer, and finally UE1 The device through communication communication with the UE 2 is performed by using the device through communication resource configured by the eNB1 in the mode switching message. Step S1816: The mode switching is completed.
- an optional transmission mode switching completion message is sent to e Bl.
- the eNB1 may initiate release or modify the switched cellular communication data bearer. So far, the mode switching of the UE1 and UE2 from the cellular communication mode to the device through communication mode is completed.
- the eNB1 is responsible for determining whether the UE1 and the UE2 are adjacent, and whether there are sufficient air interface resources for the device direct communication of the UE1 and the UE2.
- the mobility management entity and the device through server are responsible for determining whether UE1 and UE2 have device direct communication capabilities.
- the mobile management entity and the device through server determine whether the UE1 and the UE2 are in the vicinity.
- the eNB1 only needs to determine whether there are enough air interface resources for the device direct communication of the UE1 and the UE2.
- the mobile management entity and the device through server determine whether the UE1 and the UE2 have the device direct communication capability, whether the UE1 and the UE2 are in proximity, and whether there are sufficient air interface resources for the device direct communication of the UE1 and the UE2.
- the eNB1 only The mode switching request message needs to be forwarded.
- the mobile management entity and the device through server determine whether the UE1 and the UE2 are in proximity, and the eNB1 is responsible for determining whether the UE1 and the UE2 have the device direct communication capability, and whether there are sufficient air interface resources for the device direct communication of the UE1 and the UE2.
- Example 3 In the scenario of network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through. Data session communication is established between UE1 and UE2, and the data flow thereof is passed. The device communicates directly with the communication bearer. As UE1 gradually moves away from the peripheral area of UE2, UE1 detects that the discovery signal sent by UE2 is gradually weaker than a given threshold.
- FIG. 19 is a flowchart of mode switching of Example 3 according to an embodiment of the present invention. As shown in FIG. 19, the following steps S1902 to S1918 are included. Step S1902: UE2 sends a D2D discovery signal to UE1. Step S1904: The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and determines whether there is a data flow with the UE2. Step S1906: Send a mode switching request.
- the mode switching request message includes at least one or any combination of the following fields: identifier of UE2, UE1 pair
- the signal measurement result of the UE2, the measurement result of the UE1 to the serving base station, the UE1 and the UE2 perform the indication of the device through communication, the UE1 and the UE2 perform the bearer information corresponding to the data flow of the device through communication, and the UE1 and the UE2 perform the data flow of the device through communication. Or carrying the corresponding quality of service information, whether the UE1 establishes a corresponding cellular communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a cellular communication data bearer.
- the mode switching request message may further include a mode switching type and a serving base station information of the UE 2, wherein the mode switching type indicates switching from the device through communication to the cellular communication mode.
- the condition that the eNB1 determines whether the UE1 meets the mode of switching from the device through communication mode to the cellular communication mode includes: determining whether the UE1 performs device direct data communication with the UE2, and determines whether there are sufficient cellular communication air interface and backbone link resources.
- the eNB1 may perform device direct communication indication according to the UE1 and the UE2 carried in the mode switching request message to determine that device direct communication is being performed between the UE1 and the UE2.
- the eNB1 can learn whether the first user equipment performs the device through communication with the second user equipment according to the saved context information of the UE1, and the eNB1 can also obtain information about whether the UE1 and the UE2 perform the device through communication with other network side entities.
- Step S1910 The transmission mode switching negotiation request.
- the eNB1 determines the serving base station of the UE2, and the serving base station acquisition method of the UE2 is not within the protection scope of the present application.
- the serving base station of UE2 is e Bl, and then eNB1 continues to determine whether UE 2 satisfies the condition of mode switching.
- the eNB1 sends a mode switch negotiation request message to the UE2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1, the bearer information corresponding to the data flow of the device direct communication between the UE1 and the UE2, and the data flow of the device direct communication and the service corresponding to the bearer by the UE1 and the UE2 Quality information.
- the mode switching negotiation request message may also display a mode switching type indicating switching from device direct communication to cellular communication. Step S1912: It is judged whether the condition of the mode switching is satisfied.
- the UE 2 receives the mode switching negotiation request message and determines whether the condition of the mode switching is satisfied. Step S1914: If yes, the mode switch negotiation request acknowledge message is sent, otherwise the mode switch negotiation failure message is sent, and the mode switch negotiation failure message includes a failure cause indication.
- the mode switching negotiation request acknowledgement message may include at least one or any combination of the following information: the identifier of the UE1, the bearer information corresponding to the data stream of the UE1 and the UE2 supported by the UE2, and the data stream of the UE1 and the UE2 supported by the UE2 for cellular communication And or bear the corresponding quality of service information.
- the mode switching negotiation request acknowledgement message may further include the following information: bearer information corresponding to the data flow in which the UE1 and the UE2 perform cellular communication, which are not supported by the UE2, and the data flow and the bearer corresponding service performed by the UE1 and the UE2 that are not supported by the UE2. Quality information.
- the eNB1 Upon receiving the mode switch negotiation request acknowledgement message, the eNB1 considers that the UE2 satisfies the condition of the mode switch. The eNB1 then sends a mode switch message to UE1 and UE2.
- the mode switching message includes a UE identifier with which mode switching communication is required, and a data flow and or bearer information of the device through communication for mode switching.
- the mode switch message may also carry the cellular communication bearer configuration/establishment information, and the UE1 and the UE2 establish a cellular communication bearer. .
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- Step S1916 The UE1 and the UE2 determine whether to establish a corresponding cellular communication data bearer and whether to modify the cellular communication data bearer according to the data flow and the bearer information of the device through communication indicated by the mode switching message.
- Step S1918 After the UE1 and the UE2 complete the mode switching, the optional transmission mode handover complete message is sent to the eNB1. After receiving the mode switch completion message of UE1 and UE2, the eNB1 may initiate release or modify the device direct communication data bearer.
- Example 4 In the scenario of network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through. Data session communication is established between UE1 and UE2, and its data flow is forwarded through the infrastructure of the cellular network. As UE1 gradually moves to the peripheral area of UE2, UE1 can detect the discovery signal transmitted by UE2. As the distance between UE1 and UE2 approaches, the measurement signal sent by UE1 detected by UE1 becomes stronger and stronger. At the same time, UE1 judges that there is a data flow through cellular communication with UE2.
- FIG. 20 is a flowchart of mode switching of Example 4 according to an embodiment of the present invention. As shown in FIG. 20, the following steps S2002 to S2016 are included. Step S2002: UE2 sends a D2D discovery signal to UE1. Step S2004: The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and determines whether there is a data flow with the UE2. Step S2006: Send a mode switching request.
- the mode switching request message may include the identifier of the UE2, the signal measurement result of the UE2 to the UE2, the UE1 and the UE2 perform the cellular communication indication, the UE1 and the UE2 perform the bearer information corresponding to the data flow of the cellular communication, and the UE1 and the UE2 perform the cellular communication data.
- the flow and or the corresponding quality of service information are carried, whether the UE1 establishes a corresponding device direct communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a device direct communication data bearer.
- the mode switching request message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- Step S2008 It is judged whether the condition of the mode switching is satisfied. After receiving the measurement report of the UE1, the eNB1 finds that the signal quality of the UE2 in the measurement report is good enough, and further indicates that the UE1 preferentially adopts the device through communication mode at the user equipment level according to the mode tendency information of the UE1 previously acquired from the core network element (user equipment level). Priority refers to, and triggers a condition for determining whether UE1 is satisfied to switch from the cellular communication mode to the device through communication mode.
- the condition that the eNB1 determines whether the UE1 meets the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 supports the device through communication function, whether the UE1 performs cellular data communication with the UE2, whether the UE1 is adjacent to the UE2, and whether there are sufficient devices.
- the through communication communication air interface resource is used for UE1 and UE2 to perform device direct communication.
- the eNB1 determines that the UE1 supports the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS. Or the eNB1 directly requests the MME/D2D server to determine whether the UE1 supports device through communication.
- the eNB1 may perform cellular communication indication according to the UE1 and the UE2 carried in the measurement report message to determine that cellular data communication is being performed between the UE1 and the UE2.
- the eNB1 determines that the UE1 satisfies the link quality threshold for performing device direct communication with the UE2 according to the measurement report of the UE1, and considers that the UE1 is adjacent to the UE2.
- the eNB1 determines whether there is sufficient device direct communication resource to support the corresponding device through communication according to the bearer information corresponding to the data flow of the cellular communication performed by the UE1 and the UE2, and the service data corresponding to the data flow and the bearer of the UE1 and the UE2.
- Step S2010 Sending a mode switching negotiation request.
- the eNB1 determines the serving base station of the UE2, and the serving base station acquisition method of the UE2 is not within the protection scope of the present application.
- the serving base station of UE2 is eNB1.
- Step S2012 The eNB1 continues to determine whether the UE2 satisfies the condition of mode switching, and includes determining whether the UE2 supports the device through communication function.
- eNB1 sends a mode switch negotiation request message to UE2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1, the bearer information corresponding to the data flow of the UE1 and the UE2 for performing cellular communication, and the data flow of the cellular communication and the corresponding service quality information of the UE1 and the UE2.
- eNB1 can allocate device direct communication resources, UE1 capability information.
- the mode switch negotiation request message may also display a mode switch type indication to switch from cellular communication to device direct communication. Letter.
- the UE2 receives the mode switching negotiation request message, and determines whether the mode switching condition is met, and specifically includes whether there is sufficient device direct communication resource for the UE1 and the UE2 to perform device through communication.
- Step S2014 It is assumed that the UE2 determines that there is not enough device direct communication resource for the UE1 and the UE2 to perform device direct communication, and then sends a mode switching negotiation failure message, and the mode switching negotiation failure message includes a failure reason indication.
- Step S2016 If the eNB1 receives the mode switching negotiation failure message, it is considered that the UE1 cannot perform mode switching. The eNB1 sends a mode switch reject message to the UE1, indicating the reason for the mode switch failure.
- Example 5 In the scenario where the network infrastructure is covered, the eNB1 finds that the backbone link resources between the SGW and the SGW are tight, and the network needs to be reduced. Therefore, the detection of the potential device through communication node pair is initiated.
- FIG. 21 is a flowchart of mode switching of Example 5 according to an embodiment of the present invention. As shown in FIG. 21, the following steps S2102 to S2110 are included. Step S2102: The eNB1/SGW/PGW triggers network offload. Step S2104: Detect a pair of potential device through communication nodes. The detection of a potential device through communication node pair may also be initiated by the SGW or PGW.
- the detection of the pair of potential device through communication nodes refers to the pair of UE nodes that are in the process of discovering the cellular data communication served by the same base station, and the eNB1/SGW/PGW performs the packet header detection on the communication data packet of the served UE, and determines the UE1 according to the source and destination address detection. Whether to perform cellular communication with UE2 served by the same base station. If the eNB1 detects that there are UE node pairs that satisfy the condition, such as UE1 and UE2, the eNB1 further determines whether the condition of the mode switching is satisfied. Step S2106: It is judged whether the condition of the mode switching is satisfied.
- the condition that the eNB1 determines whether the UE1 and the UE2 meet the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 and the UE2 support the device through communication function, whether the UE1 is adjacent to the UE2, and whether there is sufficient device direct communication communication air interface resource for the UE1. Perform device direct communication with UE2.
- the eNB1 determines that the UE1 and the UE2 support the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS. eNB1 requires UE1 and UE2 to perform device pass-through discovery measurement, and judges that UE1 satisfies and
- the UE2 performs a link quality threshold for device direct communication, so that UE1 is considered to be adjacent to UE2.
- the eNB1 obtains the geographical location information or the distance information of the UE1 and the UE2 directly from the location server or indirectly from the MME and the device through server, and determines whether the UE1 and the UE2 are adjacent according to the distance information.
- e Bl determines whether there is sufficient device direct communication resource support corresponding to the bearer information corresponding to the data stream of the UE1 and the UE2 for performing cellular communication, and the data flow corresponding to the UE1 and the UE2 for performing cellular communication and the corresponding service quality information.
- Device direct communication is the geographical location information or the distance information of the UE1 and the UE2 directly from the location server or indirectly from the MME and the device through server, and determines whether the UE1 and the UE2 are adjacent according to the distance information.
- e Bl determines whether there is sufficient device direct communication resource support corresponding to the bear
- the eNB1 considers that sufficient device direct-through communication air interface resources are satisfied for the UE1 and the UE2 to perform device-through communication.
- the eNB1 determines the serving base station of the UE2, and the serving base station acquisition method of the UE2 is not within the protection scope of the present application.
- the serving base station of UE2 is e Bl
- the eNB1 continues to determine whether the UE2 satisfies the condition of mode switching, and specifically includes: eNB1 determines whether the UE2 supports the device through communication function, and the eNB1 may obtain the information according to the MME/ProSe server or the HSS.
- the obtained UE device pass-through attribute information indicates that the UE2 supports the device through-communication capability.
- Step S2108 Mode switching.
- eNB1 sends a mode switching message to UE1 and UE2.
- the mode switch message contains the UE identity with which mode switching communication is required, the data stream and or bearer information of the cell communication for mode switching.
- the mode switching message may include resource configuration information of UE1 and UE2 for device direct communication, and is used for the scenario where the eNB1 allocates a dedicated resource or a dedicated resource pool for the device through communication for the UE1 and the UE2.
- the mode switch message may also carry the device direct communication bearer setup/modification information for the UE1. Establish a device direct communication bearer with UE2.
- the mode switch message may carry updated TFT information for mapping the cellular communication data streams of the original UE1 and UE2 from the cellular data bearer update to the device direct data bearer.
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- the UE1 and the UE2 determine whether to establish a corresponding device through communication data bearer according to the data flow and the bearer information of the cellular communication that needs to perform mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data stream of the cellular communication indicated by the mode switching message to the corresponding device through communication data bearer. For mode switching from cellular communication to device through communication, UE1 performs device direct communication with UE2 using the device through communication resource configured by eNB1 in the mode switching message. Step S2110: The mode switching is completed. After UE1 and UE2 complete the mode switching, an optional transmission mode switching completion message is sent to e Bl.
- FIG. 22 is a flowchart of mode switching of Example 6 according to an embodiment of the present invention. As shown in FIG. 22, the following steps S2202 to S2216 are included. Step S2202: The eNB1/SGW/PGW triggers network offloading.
- Step S2104 Detect a pair of potential device through communication nodes.
- the detection of a potential device through communication node pair may also be initiated by the SGW or PGW.
- the detection of the pair of potential device through communication nodes refers to the pair of UE nodes that are in the process of discovering the cellular data communication served by the same base station, and the eNB1/SGW/PGW performs the packet header detection on the communication data packet of the served UE, and determines the UE1 according to the source and destination address detection. Whether to perform cellular communication with UE2 served by the same base station.
- Step S2206 Determine whether the condition of the mode switching is satisfied.
- the condition that the eNB1 determines whether the UE1 and the UE2 meet the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 and the UE2 support the device through communication function, whether the UE1 is adjacent to the UE2, and whether there is sufficient device direct communication communication air interface resource for the UE1. Perform device direct communication with UE2.
- the eNB1 determines that the UE1 and the UE2 support the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS.
- the eNB1 requires the UE1 and the UE2 to perform the device pass-through discovery measurement, and determines that the UE1 satisfies the link quality threshold of the device through communication with the UE2 according to the measurement report, so that the UE1 and the UE2 are considered to be adjacent.
- the eNB1 obtains the geographical location information or the distance information of the UE1 and the UE2 directly from the location server or indirectly from the MME and the device through server, and determines whether the UE1 and the UE2 are adjacent according to the distance information.
- Step S2208 The eNB1 sends a mode switching negotiation request message to the UE1 and the UE2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1 and the UE2, the bearer information corresponding to the data flow in which the UE1 and the UE2 perform cellular communication, and the data flow and the bearer corresponding to the cellular communication performed by the UE1 and the UE2. Quality of Service information, capability information of UE1 and or UE2.
- the mode switching negotiation request message may also display a mode switching type indicating switching from cellular communication to device through communication.
- Step S2210 The UE1 and the UE2 receive the mode switching negotiation request message, and determine whether the mode switching condition is met, and specifically whether there is sufficient device direct communication resource for the UE1 and the UE2 to perform device through communication.
- Step S2212 Assuming that both UE1 and UE2 have sufficient device through communication resources for UE1 and UE2 to perform device through communication, UE1 and UE2 send a mode switch negotiation confirmation message to e Bl.
- Step S2214 Mode switching. After receiving the mode switch negotiation acknowledgement message sent by UE1 and UE2, eNB1 sends a mode switch message to UE1 and UE2.
- the mode switch message includes the UE identity with which mode switching communication is required, the data stream and or bearer information of the cell communication for mode switching.
- the mode switching message may include resource configuration information that UE1 and UE2 perform device through communication, and is used in a scenario where eNB1 allocates a dedicated resource or a dedicated resource pool for UE1 and UE2 for device through communication. If the UE1 and the UE2 have not established the device through communication data bearer or the context of the UE1 and the UE2 saved by the eNB1 needs to modify the device direct communication data bearer, the mode switch message may also carry the device direct communication bearer setup/modification information for the UE1. Establish a device direct communication bearer with UE2.
- the mode switch message may carry updated TFT information for mapping the original UE1 and UE2 cellular communication data streams from the cellular data bearer update to the device pass-through data bearer.
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- the UE1 and the UE2 determine whether to establish a corresponding device through communication data bearer according to the data flow and the bearer information of the cellular communication that needs to perform mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data stream of the cellular communication indicated by the mode switching message to the corresponding device through communication data bearer. For mode switching from cellular communication to device through communication, UE1 performs device direct communication with UE2 using the device through communication resource configured by eNB1 in the mode switching message. Step S2216: The mode switching is completed. After UE1 and UE2 complete the mode switching, an optional transmission mode switching completion message is sent to e Bl.
- Example 7 In the scenario of network infrastructure coverage, eNB1 detects a change in backbone link resources with the SGW and can support more cellular communications. The eNB1 therefore initiates the detection of nodes that are prone to cellular communication but are in the device through communication.
- FIG. 23 is a flowchart of mode switching of Example 7 according to an embodiment of the present invention. As shown in FIG. 23, the following steps S2302 to S2310 are included.
- Step S2302 The eNB1 triggers periodically or according to the air interface resource and the backbone link bandwidth change.
- Step S2304 Detecting a node that tends to communicate with the cellular but performs device through communication.
- Step S2306 It is judged whether the condition of the mode switching is satisfied. If e Bl detects that there are UE node pairs that satisfy the condition, such as UE1 and UE2, e Bl further determines whether the condition of mode switching is satisfied.
- the condition that the eNB1 determines whether the UE1 and the UE2 meet the handover from the cellular communication mode to the device through communication mode includes: whether there are sufficient air interface resources for the UE1 to perform cellular communication with the UE2.
- eNB1 determines that the condition is met, eNB1 sends a mode switch message to UE1 and UE2.
- the mode switching message includes a UE identifier with which mode switching communication is required, and a data flow and or bearer information of the device through communication for mode switching. If the UE1 and the UE2 have not established the cellular communication data bearer or the context of the UE1 and the UE2 saved by the eNB1 needs to modify the cellular communication data bearer, the mode switch message may also carry the cellular communication bearer setup/modification information, and is used for establishing the UE1 and the UE2. Cellular communication bearer.
- the mode switch message may carry updated TFT information for mapping the original UE1 and UE2 cellular communication data streams from the device direct data bearer update to the cellular data bearer.
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- Step S2308 Perform mode switching. The UE1 and the UE2 determine whether to establish a corresponding cellular communication data bearer according to the data flow and the bearer information of the device through communication required for the mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data flow of the device through communication indicated by the mode switching message to the corresponding cellular communication data bearer.
- Step S2310 The mode switching is completed. After UE1 and UE2 complete mode switching, an optional transmission mode handover complete message is sent to eNB1. Received by eNBl
- Embodiment 2 This embodiment provides a method for user equipment mode switching in a network coverage scenario. A feature of this embodiment is that the user equipment performing mode switching is under the coverage of different base stations. In order to implement mode switching, the signaling interaction between the base stations and between the base station and the core network element includes the following basic processes. This embodiment provides a mode switching negotiation process between adjacent e Bs.
- FIG. 24 is a flowchart of mode switching negotiation by neighboring e B according to an embodiment of the present invention. As shown in FIG.
- Step S2404 The eNB1 sends a mode switching negotiation request message to e B2.
- Step S2404 After receiving the message, e B2 determines whether the condition of mode switching is met, and if yes, sends a mode switching negotiation confirmation message to eNB1. After receiving the mode switch negotiation acknowledgement message, the eNB1 considers that the mode switch negotiation is successful.
- the flow of the e B cancel mode switching negotiation is as shown in FIG. 25, and includes the following step S2502.
- Step S2502 If the eNB1 initiates the mode switch negotiation, and before the mode switch negotiation acknowledgement message is received, it is found that the related UE no longer meets the condition of the mode switch, and the eNB1 sends a mode switch negotiation cancellation message to
- the mode switching negotiation failure process between the neighboring eNBs is as shown in FIG. 26, and includes the following steps S2602 to S2604.
- Step S2602 The eNB1 sends a mode switching negotiation request message to e B2.
- Step S2604 After receiving the message, e B2 determines whether the condition of mode switching is met. If not, sends a mode switching negotiation failure message to eNB1. After receiving the mode switch failure message, the eNB1 considers that the mode switch negotiation fails.
- the flow of mode switching negotiation by the neighboring eNB through the MME is as shown in FIG. 27, and includes the following steps S2702 to S2708.
- Step S2702 The eNB1 sends a mode switching negotiation request message to the MME.
- Step S2704 After receiving the message, the MME determines whether the mode switching condition is met, and forwards the mode switching negotiation message to e B2.
- Step S2706 After receiving the message, e B2 determines whether the condition of mode switching is met, and if yes, sends a mode switching negotiation response message to the MME.
- Step S2708 After receiving the message, the MME forwards the mode switch negotiation confirmation message to the eNB1. After receiving the mode switch negotiation acknowledgement message, the eNB1 considers that the mode switch negotiation is successful.
- the device through system mode switching method will be described in detail below by way of example 8 to example 10.
- Example 8 In the scenario of network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through.
- FIG. 28 is a flowchart of mode switching according to Example 8 of the present invention, and as shown in FIG. 28, the following steps S2802 to S2818 are included.
- Step S2802 UE2 sends a D2D discovery signal to UE1.
- Step S2804 The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and performs measurement reporting if necessary.
- Step S2806 The UE measures the report.
- the measurement report message may include the identifier of the UE2, the signal measurement result of the UE2 to the UE2, the signal measurement result of the UE1 to the serving base station, the UE1 and the UE2, and the UE1 and the UE2 perform the bearer information corresponding to the data flow of the cellular communication,
- the UE1 and the UE2 perform data communication of the cellular communication and the corresponding service quality information, whether the UE1 establishes a corresponding device direct communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a device direct communication data bearer.
- the measurement report message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- the condition that the eNB1 determines whether the UE1 meets the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 supports the device through communication function, whether the UE1 performs cellular data communication with the UE2, whether the UE1 is adjacent to the UE2, and whether there are sufficient devices.
- the through communication communication air interface resource is used for UE1 and UE2 to perform device direct communication.
- the eNB1 determines that the UE1 supports the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS.
- the eNB1 may perform cellular communication indication according to the UE1 and the UE2 carried in the measurement report message to determine that cellular data communication is being performed between the UE1 and the UE2.
- the eNB1 determines that the UE1 satisfies the link quality threshold for performing device direct communication with the UE2 according to the measurement report of the UE1, so that the UE1 and the UE2 are considered to be adjacent.
- the eNB1 determines whether there is sufficient device direct communication resource to support the corresponding device through communication according to the bearer information corresponding to the data flow of the cellular communication performed by the UE1 and the UE2, and the service data corresponding to the data flow and the bearer of the UE1 and the UE2.
- Step S2810 The eNB1 sends a mode negotiation request to the e B2.
- the eNB1 determines the serving base station of the UE2, and the serving base station acquisition method of the UE2 is not within the protection scope of the present application.
- the serving base station of UE2 is e B2, and eNB1 needs to negotiate with e B2.
- the eNB1 sends a mode switch negotiation request message to e B2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1, the identifier of the UE2, the bearer information corresponding to the data stream of the UE1 and the UE2 supported by the eNB1, and the UE1 and the UE2 supported by the eNB1 perform cellular communication.
- the data stream and the corresponding service quality information are carried, whether the UE1 establishes a corresponding device direct communication bearer with the UE2 and the UE1 and the UE2 need to establish an indication of the device direct communication bearer, and the eNB1 can allocate the device through communication resource for the UE1, and the UE1 Capability information.
- Step S2812 e B2 determines whether the condition of the mode switching is satisfied.
- the e B2 receives the mode switching negotiation request message, and determines whether the UE2 satisfies the mode switching condition, and specifically includes determining whether the UE2 supports the device through communication function, and whether there is sufficient device through communication resource for the UE1 and the UE2 to perform device through communication.
- e B2 can be learned according to the UE device pass-through attribute information obtained from the MME/ProSe server or the HSS
- UE2 supports device pass-through communication capabilities.
- e B2 can perform bearer information corresponding to the data flow of the device direct communication and UE1 and UE2 perform the cellular communication data flow and/or the service quality information corresponding to the bearer according to the received eNB1 supported UE1 and the UE2, and/or the serving base station of the UE1 can
- the device direct communication communication port resource information allocated to the UE1 determines whether there is a corresponding resource allocated to the UE2 for device through communication.
- Step S2814 If UE2 satisfies the mode switching condition, e B2 sends a mode switching negotiation request acknowledgement message to e Bl.
- the handover negotiation request acknowledgement message may include at least one of the following information or any combination: e B2 supports UE1 and UE2 to carry bearer information corresponding to the data flow of the device through communication, e B2 supports UE1 and UE2 to perform data communication of the device through communication Or the corresponding service quality information, the resource information that can be allocated to UE1 and UE2 for device direct communication, and the capability information supported by UE1 and UE2.
- the handover negotiation request acknowledgement message may further include the following information: e2 does not support UE1 and UE2 perform bearer information corresponding to the data flow of the device through communication, and e1 does not support UE1 and U2 perform data flow of the device through communication and/or Carry the corresponding service quality information.
- Step S2816 Mode switching.
- e Bl receives the mode switch negotiation request acknowledgement message, the mode switch negotiation is successful, and e Bl sends a mode switch message to UE1 and UE2.
- the mode switch message includes the UE identity with which mode switching communication is required, the data stream and or bearer information of the cell communication for mode switching.
- the mode switching message may include resource configuration information that the UE1 and the UE2 perform device through communication, and is used in the scenario that the eNB1 allocates a dedicated resource or a dedicated resource pool for the device through communication for the UE1 and the UE2.
- the mode switch message may also carry the device direct communication bearer setup information, and the UE1 and the UE2 establish device pass-through. Communication bearer.
- the mode switch message may carry updated TFT information for mapping the original UE1 and UE2 cellular communication data streams from the cellular data bearer update to the device pass-through data bearer.
- the mode switch message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- the UE1 and the UE2 determine whether to establish a corresponding device through communication data bearer according to the data flow and the bearer information of the cellular communication that needs to perform mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data stream of the cellular communication indicated by the mode switching message to the corresponding device through communication data bearer. For mode switching from cellular communication to device through communication, UE1 performs device direct communication with UE2 using the device through communication resource configured by eNB1 in the mode switching message. Step S2818: The mode switching is completed.
- UE1 and UE2 After completing the mode switching, UE1 and UE2 optionally send a mode switching completion message to e Bl. After receiving the mode handover complete message of UE1 and UE2, the eNB1 may initiate release or modify the switched cellular communication data bearer. So far, the mode switching of the UE1 and UE2 from the cellular communication mode to the device through communication mode is completed.
- Example 9 In the scenario of network infrastructure coverage, UE1 and UE2 have device pass-through discovery and device pass-through communication capabilities and enable device pass-through. Data session communication is established between UE1 and UE2, and its data flow is forwarded through the infrastructure of the cellular network. As UE1 gradually moves to the peripheral area of UE2, UE1 can detect the discovery signal transmitted by UE2.
- Step S2902 e B2 sends a D2D discovery signal to UE1.
- Step S2904 The UE1 detects the D2D discovery signal sent by the UE2, performs measurement, and determines whether there is a data flow with the UE2.
- Step S2906 UE1 sends a mode switching request to e Bl.
- the mode switching request message may include the identifier of the UE2, the signal measurement result of the UE2 to the UE2, the UE1 and the UE2 perform the cellular communication indication, the UE1 and the UE2 perform the bearer information corresponding to the data flow of the cellular communication, and the UE1 and the UE2 perform the cellular communication data.
- the flow and or the corresponding quality of service information are carried, whether the UE1 establishes a corresponding device direct communication data bearer with the UE2 and an indication that the UE1 and the UE2 need to establish a device direct communication data bearer.
- the mode switching request message may further include a mode switching type and a serving base station information of the UE2, wherein the mode switching type indicates switching from the cellular communication to the device through communication mode.
- Step S2908 The eNB1 determines whether the condition of the mode switching is satisfied. After receiving the mode switching request of the UE1, the eNB1 triggers determining whether the UE1 meets the condition of switching from the cellular communication mode to the device through communication mode.
- the condition that the eNB1 determines whether the UE1 meets the handover from the cellular communication mode to the device through communication mode includes: determining whether the UE1 supports the device through communication function, whether the UE1 performs cellular data communication with the UE2, whether the UE1 is adjacent to the UE2, and whether there are enough devices.
- the through communication communication air interface resource is used for UE1 and UE2 to perform device direct communication.
- the eNB1 determines that the UE1 supports the device through communication capability according to the UE device pass-through attribute information acquired from the MME/D2D server or the HSS.
- the eNB1 may perform cellular communication indication according to the UE1 and the UE2 carried in the measurement report message to determine that cellular data communication is being performed between the UE1 and the UE2.
- the eNB1 determines that the UE1 satisfies the link quality threshold for performing device direct communication with the UE2 according to the measurement report of the UE1, so that the UE1 and the UE2 are considered to be adjacent.
- the eNB1 determines whether there is sufficient device direct communication resource to support the corresponding device through communication according to the bearer information corresponding to the data flow of the cellular communication performed by the UE1 and the UE2 and the service data corresponding to the data flow and the bearer of the UE1 and the UE2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1, the identifier of the UE2, the bearer information corresponding to the data stream of the UE1 and the UE2 supported by the eNB1, and the UE1 and the UE2 supported by the eNB1 perform cellular communication.
- the data stream and the corresponding service quality information are carried, whether the UE1 establishes a corresponding device direct communication bearer with the UE2 and the UE1 and the UE2 need to establish an indication of the device direct communication bearer, and the eNB1 can allocate the device through communication resource for the UE1, and the UE1 Capability information.
- Step S2912 e B2 determines whether the condition of the mode switching is satisfied.
- the e B2 receives the mode switching negotiation request message, and determines whether the UE2 satisfies the mode switching condition, and specifically includes determining whether the UE2 supports the device through communication function, and whether there is sufficient device through communication resource for the UE1 and the UE2 to perform device through communication.
- e B2 first determines whether UE 2 supports the device through communication function. If supported, e B2 sends a mode switch negotiation request message to UE2.
- the mode switching negotiation request message may carry one or any combination of the following information: the identifier of the UE1, the bearer information corresponding to the data flow in which the UE1 and the UE2 perform cellular communication, and the data flow corresponding to the cellular communication and the corresponding service quality information of the UE1 and the UE2.
- eNB1 can allocate device direct communication resources, UE1 capability information.
- the mode switching negotiation request message may also display a mode switching type indicating switching from cellular communication to device through communication.
- Step S2916 The UE2 receives the mode switching negotiation request message, and determines whether the condition of the mode switching is met, and specifically includes whether there is sufficient device direct communication resource for the UE1 and the UE2 to perform device through communication.
- Step S2918 It is assumed that the UE2 determines that there is not enough device direct communication resource for the UE1 and the UE2 to perform device direct communication, and then sends a mode switching negotiation failure message, and the mode switching negotiation failure message includes a failure reason indication.
- Step S2920 After receiving the mode switching negotiation failure message, e B2 considers that UE1 cannot perform mode switching, and sends a mode negotiation failure message to eNB1, where the message includes a failure cause indication.
- Step S2922 After receiving the message, the eNB1 sends a mode switch reject message to the UE1, indicating the reason for the mode switch failure.
- Example 10 In the scenario where the network infrastructure is covered, the eNB1 detects that the backbone link resource changes with the SGW, and can support more cellular communications. The eNB1 thus initiates detection of a node that is prone to cellular communication but is in the process of device direct communication, as shown in FIG. 30, including the following steps S3002 to S3016.
- Step S3002 The eNB1 triggers periodically or according to the air interface resource and the backbone link bandwidth change.
- Step S3004 Detecting a pair of nodes that are prone to cellular communication but are in device direct communication.
- Step S3006 It is judged whether the condition of the mode switching is satisfied.
- the eNB1 detects that there are UE node pairs that satisfy the condition, such as UE1 and UE2, the eNB1 further determines whether the condition of the mode switching is satisfied.
- the condition that the eNB1 determines whether the UE1 meets the handover from the cellular communication mode to the device through communication mode includes: whether there are enough air interface resources for the UE1 to perform cellular communication with the UE2. If eNB1 determines that UE1 satisfies the condition, then eNB1 determines the serving base station of UE2.
- Step S3008 The mode switching negotiation request. In this example, the serving base station of UE2 is e B2, and eNB1 needs to negotiate with e B2.
- Step S3010 It is judged whether the condition of the mode switching is satisfied.
- the e B2 receives the mode switching negotiation request message, and determines whether the UE2 satisfies the mode switching condition, and specifically includes determining whether the UE2 supports the device through communication function, and whether there are sufficient air interface cellular resources and backbone link resources for the UE1 and the UE2 to perform cellular communication. . e B2 can be learned according to the UE device pass-through attribute information obtained from the MME/ProSe server or the HSS
- UE2 supports device pass-through communication capabilities.
- e B2 judges whether there is a corresponding resource according to the bearer information corresponding to the data stream of the UE1 and the UE2 supported by the eB and the data stream and/or the service quality information corresponding to the bearer communication of the UE1 and the UE2. Assigned to UE2 for cellular communication. If the cellular air interface resource or the backbone link resource can support the data flow of the UE1 and the UE2 supported by all or part of the eNB1 for cellular communication, the e B2 considers that sufficient device direct communication air interface resources are satisfied for the UE1 and the UE2 to perform cellular communication. conditions of. Step S3012: The mode switching negotiation request is confirmed.
- the handover negotiation request acknowledgement message may further include the following information: e B2 does not support bearer information corresponding to the data flow in which the UE1 and the UE2 perform cellular communication, and the data stream and the bearer corresponding to the UE1 and the U2 that are not supported by the e B2 perform cellular communication. Quality of service information.
- Step S3014 Mode switching.
- the mode switch negotiation succeeds.
- eNB1 and e B2 respectively send mode switching messages to UE1 and UE2.
- the mode switching message includes a UE identifier with which mode switching communication is required, a data stream and or bearer information of the device through communication for mode switching.
- the mode switch message may also carry the cellular communication bearer setup/modification information, and is used for establishing the UE1 and the UE2.
- Cellular communication bearer may carry updated TFT information for mapping the original UE1 and UE2 cellular communication data streams from the device direct data bearer update to the cellular data bearer.
- the mode switching message here may be designing new air interface signaling or carrying by RRC reconfiguration and other existing air interface signaling.
- the UE1 and the UE2 determine whether to establish a corresponding cellular communication data bearer according to the data flow and the bearer information of the device through communication required for the mode switching indicated by the mode switching message. If the corresponding bearer has been established and the updated TFT information has been acquired, UE1 and UE2 switch the data flow of the device through communication indicated by the mode switching message to the corresponding cellular communication data bearer. Step S3016: The mode switching is completed. After UE1 and UE2 complete the mode switching, an optional transmission mode switching completion message is sent to e Bl. After receiving the mode switching completion message of UE1 and UE2, e Bl may initiate release or modify the switched device direct communication data bearer.
- the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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| EP14816825.5A EP3016469B1 (en) | 2013-06-27 | 2014-06-25 | Method and device for mode switching |
| US14/901,024 US9832807B2 (en) | 2013-06-27 | 2014-06-25 | Method and device for mode switching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI719181B (zh) * | 2016-03-29 | 2021-02-21 | 大陸商Oppo廣東移動通信有限公司 | 用於確定設備到設備通信的傳輸資源的方法和裝置 |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581854B (zh) * | 2013-10-16 | 2019-07-12 | 中兴通讯股份有限公司 | 一种无线连接方法和装置 |
| US9913310B2 (en) | 2014-04-24 | 2018-03-06 | Lg Electronics Inc. | Method for establishing layer-2 entities for D2D communication system and device therefor |
| US10154425B2 (en) * | 2014-04-25 | 2018-12-11 | Lg Electronics Inc. | Method for a configuration error management for a sidelink radio bearer and device therefor |
| EP3162108B1 (en) * | 2014-06-25 | 2018-11-07 | Nokia Solutions and Networks Oy | Network assisted alternate coverage in a cellular communications network |
| CN105491557B (zh) * | 2014-09-15 | 2020-04-21 | 中兴通讯股份有限公司 | 一种实现能力开放的系统、方法及能力开放平台 |
| EP3185630B1 (en) * | 2014-09-19 | 2019-07-24 | Huawei Technologies Co., Ltd. | Device and method for coexistence of discovery signal and cellular signal |
| EP3198933B1 (en) * | 2014-09-26 | 2020-11-04 | Sun Patent Trust | Device-to-device wireless communication method and user equipment |
| WO2016101221A1 (zh) * | 2014-12-25 | 2016-06-30 | 华为技术有限公司 | 资源分配方法、基站和用户设备 |
| CN107211316B (zh) * | 2015-02-05 | 2021-04-13 | 瑞典爱立信有限公司 | D2d业务平衡 |
| CN104822155A (zh) * | 2015-03-27 | 2015-08-05 | 深圳酷派技术有限公司 | 一种通信处理的方法以及终端 |
| CN107683613B (zh) * | 2015-06-24 | 2021-01-01 | 苹果公司 | 增强型支持车辆到万物(v2x)通信 |
| WO2017024442A1 (zh) * | 2015-08-07 | 2017-02-16 | 华为技术有限公司 | 一种数据传输和接入网络方法及相关设备、系统 |
| KR102433127B1 (ko) * | 2016-01-04 | 2022-08-18 | 한국전자통신연구원 | 이종 네트워크 간 연동 가능한 네트워크 장치 및 그 연동방법 |
| CN109548090B (zh) | 2016-05-24 | 2020-07-07 | 华为技术有限公司 | QoS控制方法及设备 |
| JP2020502876A (ja) * | 2016-11-03 | 2020-01-23 | オッポ広東移動通信有限公司 | 通信モードを切り替える方法、端末装置及びネットワーク装置 |
| CN108243468B (zh) * | 2016-12-23 | 2021-09-21 | 夏普株式会社 | 用户移动性方法和设备 |
| US10932313B2 (en) | 2016-12-24 | 2021-02-23 | Huawei Technologies Co., Ltd. | Wireless connection switching method and terminal |
| JP2020509689A (ja) * | 2017-05-05 | 2020-03-26 | 富士通株式会社 | アクティベーション命令の確認装置、データ伝送モードの報告装置及び方法 |
| US20190053042A1 (en) * | 2017-08-11 | 2019-02-14 | Qualcomm Incorporated | Signaling user equipment capability information |
| CN111294980B (zh) * | 2019-03-28 | 2022-02-15 | 展讯通信(上海)有限公司 | 无线承载建立方法及装置 |
| ES3056409T3 (en) * | 2019-04-18 | 2026-02-20 | Lenovo Singapore Pte Ltd | Multiple zone configuration |
| CN114051742B (zh) * | 2019-07-01 | 2025-08-15 | 现代自动车株式会社 | 通信系统中组切换的方法及装置 |
| US12149994B2 (en) | 2019-07-03 | 2024-11-19 | Sony Group Corporation | Handover procedures in a sidelink wireless communications |
| CN111818593A (zh) * | 2019-07-31 | 2020-10-23 | 维沃移动通信有限公司 | 一种网络切换方法及终端 |
| CN113784384B (zh) | 2020-06-09 | 2024-03-08 | 维沃移动通信有限公司 | 模式切换方法、终端及网络侧设备 |
| CN111866816B (zh) * | 2020-06-23 | 2024-04-05 | 广东以诺通讯有限公司 | 一种在5g混合组网下d2d终端模式通信选择方法 |
| CN116648990A (zh) * | 2020-11-03 | 2023-08-25 | 交互数字专利控股公司 | 用于驻地网络的服务连续性的方法、架构、装置和系统 |
| US20230007517A1 (en) * | 2021-07-02 | 2023-01-05 | Qualcomm Incorporated | State transition feedback |
| US11824804B2 (en) | 2021-09-16 | 2023-11-21 | Qualcomm Incorporated | Reference signal for activating communication mode |
| CN114900825B (zh) * | 2022-04-12 | 2024-03-19 | 中国电信股份有限公司 | 终端跨区协同中继切换通信方法、系统、设备及存储介质 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549613A (zh) * | 2003-05-19 | 2004-11-24 | �ʼҷ����ֵ��ӹɷ�����˾ | 在无线通信系统的p2p通信模式与传统通信模式之间软切换的方法和装置 |
| WO2013012241A2 (ko) * | 2011-07-18 | 2013-01-24 | 엘지전자 주식회사 | 기기간 통신을 지원하는 무선접속시스템에서 기기간 직접 통신 유지 방법 및 이를 지원하는 장치 |
| CN102932751A (zh) * | 2012-10-17 | 2013-02-13 | 中国联合网络通信集团有限公司 | 物联网数据传输方法和物联网 |
| CN102984699A (zh) * | 2012-12-03 | 2013-03-20 | 中国联合网络通信集团有限公司 | D2d通信数据处理方法、设备和系统 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101375481B1 (ko) * | 2007-07-06 | 2014-03-19 | 삼성전자주식회사 | 통신 시스템에서 통신 모드 결정 방법 및 장치 |
| JP5204855B2 (ja) * | 2008-12-26 | 2013-06-05 | シャープ株式会社 | 制御局、移動局及び移動通信システム |
| US8213360B2 (en) * | 2009-04-29 | 2012-07-03 | Nokia Corporation | Apparatus and method for flexible switching between device-to-device communication mode and cellular communication mode |
| US8428629B2 (en) | 2010-03-31 | 2013-04-23 | Qualcomm Incorporated | Methods and apparatus for determining a communications mode and/or using a determined communications mode |
| EP3800959A1 (en) * | 2010-09-28 | 2021-04-07 | Fujitsu Limited | Coexistent working mode establishment method, user equipment, base station and system |
| US20130201954A1 (en) | 2010-10-14 | 2013-08-08 | Keilalahdentie 4 | Device to Device and Connection Mode Switching |
| US9319955B2 (en) * | 2011-09-21 | 2016-04-19 | Lg Electronics Inc. | Method and apparatus for device-to-device communicating in wireless communication system |
| CN106604336B (zh) | 2011-09-29 | 2020-03-20 | 华为技术有限公司 | 通信模式切换的方法和装置 |
| CN103179575A (zh) * | 2011-12-23 | 2013-06-26 | 中兴通讯股份有限公司 | 一种邻近设备通信的方法和系统、网络侧设备和用户设备 |
| CA2886761C (en) * | 2012-10-01 | 2017-09-05 | Telefonaktiebolaget L M Ericsson (Publ) | A radio node, a user equipment and methods for managing a transmission |
-
2013
- 2013-06-27 CN CN201310263247.8A patent/CN104254144B/zh active Active
-
2014
- 2014-06-25 EP EP14816825.5A patent/EP3016469B1/en active Active
- 2014-06-25 WO PCT/CN2014/080763 patent/WO2014206302A1/zh not_active Ceased
- 2014-06-25 US US14/901,024 patent/US9832807B2/en active Active
- 2014-06-25 JP JP2016522221A patent/JP6463352B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549613A (zh) * | 2003-05-19 | 2004-11-24 | �ʼҷ����ֵ��ӹɷ�����˾ | 在无线通信系统的p2p通信模式与传统通信模式之间软切换的方法和装置 |
| WO2013012241A2 (ko) * | 2011-07-18 | 2013-01-24 | 엘지전자 주식회사 | 기기간 통신을 지원하는 무선접속시스템에서 기기간 직접 통신 유지 방법 및 이를 지원하는 장치 |
| CN102932751A (zh) * | 2012-10-17 | 2013-02-13 | 中国联合网络通信集团有限公司 | 物联网数据传输方法和物联网 |
| CN102984699A (zh) * | 2012-12-03 | 2013-03-20 | 中国联合网络通信集团有限公司 | D2d通信数据处理方法、设备和系统 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3016469A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI719181B (zh) * | 2016-03-29 | 2021-02-21 | 大陸商Oppo廣東移動通信有限公司 | 用於確定設備到設備通信的傳輸資源的方法和裝置 |
| US11160085B2 (en) | 2016-03-29 | 2021-10-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for determining transmission resource for device-to-device communications |
Also Published As
| Publication number | Publication date |
|---|---|
| US9832807B2 (en) | 2017-11-28 |
| CN104254144A (zh) | 2014-12-31 |
| EP3016469A4 (en) | 2016-07-06 |
| US20160374139A1 (en) | 2016-12-22 |
| JP2016526835A (ja) | 2016-09-05 |
| EP3016469B1 (en) | 2023-05-17 |
| JP6463352B2 (ja) | 2019-01-30 |
| EP3016469A1 (en) | 2016-05-04 |
| CN104254144B (zh) | 2019-07-16 |
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