CN108713347B

CN108713347B - Method, device and system for accessing network through user equipment

Info

Publication number: CN108713347B
Application number: CN201680083334.7A
Authority: CN
Inventors: 何岳; 金辉; 欧阳国威; 窦凤辉; 杨皓睿
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2016-10-28
Filing date: 2016-10-28
Publication date: 2021-02-09
Anticipated expiration: 2036-10-28
Also published as: WO2018076288A1; CN108713347A

Abstract

The embodiment of the invention provides a method, a device and a system for accessing a network through user equipment, relates to the technical field of communication, and solves the problems that in the prior art, WD power consumption is large and the WD standby time is short. The method comprises the following steps: the method comprises the steps that a first base station receives a first message sent by a first MME, wherein the first message carries uplink S1 information of WD, the first message is used for the first MME to request the first base station to access the network by the WD through User Equipment (UE), the first base station provides service for the UE, and the first MME is the MME of the UE; the first base station distributes a PDCP identifier for the WD according to the first message, wherein the PDCP identifier is used for identifying the uplink data to be transmitted as the data of the WD; the first base station establishes a first mapping relation according to the uplink S1 information and the PDCP identifier, wherein the first mapping relation is a mapping relation of a DRB between the UE and the first base station and an S1 bearer between the first base station and an SGW of the WD.

Description

Method, device and system for accessing network through user equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method, a device and a system for accessing a network through user equipment.

Background

With the continuous development of communication technology, Wearable Devices (WD) capable of installing a Subscriber Identity Module (SIM) card are increasingly widely used. The WD with the installed SIM card may communicate directly with the base station.

At present, the WD is small in volume and special in shape, so that the battery volume of the WD is small, and the battery capacity of the WD is small due to the limitation of the battery volume.

When the WD communicates directly with the base station, the WD is typically located a relatively large distance from the base station, and therefore requires relatively large transmit power when the WD transmits data to the base station, resulting in relatively large power consumption of the WD and relatively short standby time of the WD.

Disclosure of Invention

The application provides a method, a device and a system for accessing a network through user equipment, which solve the problems of large power consumption of WD and short standby time of WD in the prior art.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, a method for accessing a network by a user equipment is provided, and the method includes: a first base station (namely a base station providing service for UE) receives a first message which is sent by a first MME (namely the MME of the UE) and is used for the first MME to request WD to access a network through the UE from the first base station, wherein the first message carries uplink S1 information of the WD; the first base station allocates a PDCP identifier for identifying that the uplink data to be transmitted is WD data for the WD according to the first message; and the first base station establishes a first mapping relationship (namely the mapping relationship between the DRB between the UE and the first base station and the S1 load between the first base station and the SGW of the WD) according to the uplink S1 information of the WD and the PDCP identifier carried in the first message.

After the first base station establishes the first mapping relationship, it may be considered that the WD may access the network through the UE. That is, WD may send uplink data of WD to UE, and UE forwards the uplink data to SGW of WD according to the first mapping relationship, so that SWG of WD forwards the uplink data again.

In this application, a first MME (i.e., an MME of a UE) may send a first message requesting WD to access a network through the UE to a first base station (i.e., a base station providing service to the UE), so that the first base station allocates a PDCP identifier to the WD according to the first message, and establishes a mapping relationship between a DRB between the UE and the first base station and an S1 bearer between the first base station and an SGW of the WD according to uplink S1 information of the WD and the PDCP identifier carried in the first message, so that the WD may access the network through the UE (i.e., the UE may provide relay service to the WD), and the WD may forward uplink data of the WD to the first base station through the UE, and the first base station sends the uplink data to the SGW of the WD, so that the SWG of the WD may forward the uplink data again, i.e., the uplink data of the WD may be forwarded to the SGW of the WD through the UE and the first base. Compared with the prior art in which the WD is in direct communication with a base station for providing service for the WD, the WD and the UE are in a short distance in normal conditions, so that the WD needs less transmission power when transmitting uplink data through the UE, the WD consumes less power, and the WD standby time can be prolonged.

In a first possible implementation manner of the first aspect, in the method for accessing a network through a user equipment provided by the present application, the method for establishing, by the first base station, a first mapping relationship according to the uplink S1 information of the WD and the PDCP identifier includes: the first base station acquires a first S1 interface tunnel endpoint identifier and a first QoS value corresponding to a first EPS bearing identifier (one of a plurality of EPS bearing identifiers) according to uplink S1 information of WD; the first base station determines the identification of the first DRB corresponding to the first QoS value according to the corresponding relation between the identification of the DRB and the QoS value; then, the first base station establishes a first mapping relationship according to the identifier of the first DRB, the PDCP identifier, the IP address of the SGW in the uplink S1 information of the WD, and the identifier of the first S1 interface tunnel endpoint. In this way, the first base station may establish the first mapping relationship (i.e., the mapping relationship between the DRB between the UE and the first base station and the S1 bearer between the first base station and the SGW of the WD) in the manner described above.

In a second possible implementation manner of the first aspect, after the first base station receives the first message sent by the first MME, the method for accessing to the network through the user equipment further includes: the first base station stores the identity of the MME of WD and the identity of the MME S1 interface user equipment of WD in the first message for sending uplink signaling of WD.

In this application, after the first base station receives the first message sent by the first MME, because the first base station may store the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, which are used to send the uplink signaling of WD, which are carried in the first message, the first base station may send the uplink signaling to the MME of WD according to the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, that is, WD may send the uplink signaling of WD to the MME of WD through the UE and the first base station, thereby completing sending the uplink signaling after WD accesses the network through the UE.

After the first base station receives the uplink signaling of WD sent by the UE, the first base station may first find the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station according to the PDCP identifier carried in the uplink signaling, and then the first base station sends the uplink signaling to the MME of WD according to the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD.

In a third possible implementation manner of the first aspect, if the MME of WD is changed from the current second MME to the third MME, or the SGW of WD is changed, after the first base station establishes the first mapping relationship, the method for accessing the network through the user equipment further includes: the first base station receives a second message sent by the first MME; the second message is used for updating the identifier of the WD MME and the identifier of the WD MME S1 interface user equipment when the WD MME is changed from the current second MME to the third MME; or the second message is used for requesting the first base station to update the first mapping relation when the SGW of the WD is changed; and then the first base station updates the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD or updates the first mapping relation according to the second message.

In this application, when the MME of WD changes, the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored by the first base station may not be used, and at this time, the first base station may update the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, so that the first base station can still successfully forward the uplink signaling for WD. When the SGW of the WD is changed, the first mapping relationship established by the first base station may not be used, and at this time, the first base station may update the first mapping relationship, so that the first base station can still successfully forward the uplink data for the WD.

In a fourth possible implementation manner of the first aspect, after the first base station establishes the first mapping relationship, the method for accessing to the network through the user equipment further includes: the first base station receives a third message which is sent by the UE and used for requesting the first base station to delete the first mapping relation; and the first base station deletes the first mapping relation according to the third message.

In the present application, after the first base station establishes the first mapping relationship, when the quality of the link between the WD and the UE (generally referred to as a PC5 link) deteriorates, since the WD cannot continue to access the network through the UE, the first base station may delete the established first mapping relationship in order to save the storage resource of the first base station and improve the utilization rate of the network resource.

In a fifth possible implementation manner of the first aspect, if the base station serving the UE is changed from the first base station to the second base station, the method for accessing the network through the user equipment further includes: and the second base station deletes the first mapping relation stored in the second base station.

In this application, when a base station serving the UE is changed from a first base station to a second base station, the first base station may send a context (including the first mapping relationship) of the UE in the first base station to the second base station, and after the base station serving the UE is changed, the changed second base station may not satisfy a network connection relationship with an SGW of the WD, so that the UE cannot continue to provide a relay service for the WD, and thus, in order to save storage resources of the second base station and improve utilization rate of network resources, the second base station may delete the first mapping relationship.

In a sixth possible implementation manner of the first aspect, after the first base station establishes the first mapping relationship, the method for accessing to the network through the user equipment further includes: and the first base station sends a fourth message for indicating the UE to establish a second mapping relation to the UE, wherein the second mapping relation is the mapping relation between the PC5 bearer between the WD and the UE and the DRB between the UE and the first base station.

In this application, the first base station sends the fourth message to the UE to instruct the UE to establish the second mapping relationship (that is, the mapping relationship between the PC5 bearer between the WD and the UE and the DRB between the UE and the first base station), so that after the WD sends the uplink data of the WD to the UE, the UE may forward the uplink data to the first base station according to the second mapping relationship.

In a seventh possible implementation manner of the first aspect, after the first base station receives a third message sent by the UE, the first base station may learn, according to the third message, that the mapping relationship between the UE and the WD has been deleted by the UE, so that the first base station may delete the established first mapping relationship according to the third message. Further, after the first base station deletes the first mapping relationship according to the third message, the method for accessing to the network through the user equipment provided by the present application further includes: the first base station transmits a WD information update message for notifying the first MME that the mapping relationship between the UE and the WD has been deleted, to the first MME.

In this application, the first base station notifies the first MME that the mapping relationship between the UE and the WD has been deleted, so that the first MME can timely know that the mapping relationship between the UE and the WD has been deleted, and thus the first MME can allow other WDs to access the network through the UE.

In an eighth possible implementation manner of the first aspect, after the second base station deletes the first mapping relationship stored in the second base station, the method for accessing to the network through the user equipment further includes: the second base station sends an RRC reconfiguration message to the UE informing that the UE cannot continue to provide the relay service for the WD.

In the application, the second base station may notify the UE through the RRC reconfiguration message, and the UE cannot continue to provide the relay service for the WD, so that the UE may delete the mapping relationship between the UE and the WD after receiving the RRC reconfiguration message, thereby saving the storage resource of the UE, improving the utilization rate of the network resource, and the UE may also provide the relay service for other WDs.

In a second aspect, a method for accessing a network by a user equipment is provided, the method comprising: the UE receives a fifth message which is sent by the WD and used for requesting the WD to switch the direct path to an indirect path from the UE, wherein the direct path is a path between the WD and a base station for providing services for the WD, and the indirect path is a path between the WD, the UE and the base station for providing services for the UE; and the UE sends, to the MME of the UE, a sixth message for the UE to request WD from the MME of the UE to access the network through the UE, according to the fifth message.

In this application, after receiving a fifth message sent by the UE and requesting the WD to switch the direct path to the indirect path, the UE may send a sixth message to the MME of the UE to request the WD to access the network through the UE, so as to enable the WD to access the network through the UE. Compared with the prior art in which the WD is in direct communication with a base station for providing service for the WD, the WD and the UE are in a short distance in normal conditions, so that the WD needs less transmission power when transmitting uplink data through the UE, the WD consumes less power, and the WD standby time can be prolonged.

In a first possible implementation manner of the second aspect, after the UE sends the sixth message to the MME of the UE, the method for accessing the network through the user equipment provided by the present application further includes: the UE receives a fourth message which is sent by the first base station (namely the base station providing service for the UE) and is used for indicating the UE to establish a second mapping relation, wherein the second mapping relation is the mapping relation between PC5 load between the WD and the UE and DRB between the UE and the first base station; and the UE establishes a second mapping relation according to the fourth message.

In a second possible implementation manner of the second aspect, the fourth message carries an identifier of the WD, an identifier carried by the PC5, a PDCP identifier allocated by the first base station to the WD, and an identifier of the first DRB. The method for the UE to establish the second mapping relationship according to the fourth message includes: and the UE establishes a second mapping relation according to the identifier of the WD, the identifier of the PC5 bearer, the PDCP identifier and the identifier of the first DRB.

In a third possible implementation manner of the second aspect, after the UE receives the fifth message sent by the WD, the method for accessing the network by the user equipment further includes:

the UE transmits a seventh message to the WD to instruct to switch the indirect path to the direct path.

In this application, after receiving the fifth message sent by the WD, the UE may request, from the MME of the UE, that the WD accesses the network through the UE, that is, the transmission path of the WD is switched from the direct path to the indirect path. When the UE determines that the indirect path of the WD is unavailable (for example, the UE may not continue to provide the relay service for the WD due to the change of the base station serving the UE), the UE may instruct the WD to switch the indirect path to the direct path by sending a seventh message to the WD, so that normal transmission of uplink data and uplink signaling of the WD can be ensured.

In a fourth possible implementation manner of the second aspect, the method for accessing a network by a user equipment further includes: in case the UE detects that the PC5 link is broken, the UE deletes the mapping relationship between the UE and the WD.

In the application, when the UE detects that the PC5 link is disconnected (for example, the UE does not receive a heartbeat packet sent by the WD within a period of time), the UE may delete the mapping relationship between the WD and the UE, so that the storage resource of the UE may be saved, and the utilization rate of the network resource is improved.

In a fifth possible implementation manner of the second aspect, after the UE deletes the mapping relationship between the UE and the WD, the method for accessing the network through the user equipment further includes: and the UE sends a third message for requesting the first base station to delete the first mapping relation to the first base station.

For a description of the second aspect, a technical effect of the second aspect, other possible implementations of the second aspect, and a technical effect of other possible implementations of the second aspect, reference may be specifically made to the above-mentioned description of the first aspect or any one of its possible implementations, and details are not described here again.

In a third aspect, a method for accessing a network by a user equipment is provided, and the method includes: the first MME (namely the MME of the UE) receives an eighth message which is sent by the second MME (namely the MME of the WD) and carries the uplink S1 information of the WD; the first MME determines, according to the uplink S1 information, that the first base station (i.e., the base station providing the service for the UE) and the second MME and the SGW of the WD all satisfy the network connection relationship; the first MME then sends a first message to the first base station for the first MME to request the first base station for WD to access the network through the UE.

In this application, because the first MME (i.e., MME of UE) may determine, according to uplink S1 information of WD sent by the second MME (i.e., MME of WD), that the first base station (i.e., base station providing service to UE) and the second MME and the serving gateway SGW of WD both satisfy the network connection relationship, that is, the first MME may determine, according to uplink S1 information of WD, that the first base station can forward uplink signaling of WD to the second MME, and can forward uplink data of WD to the SGW of WD, the first MME may request WD to the first base station to access the network through the UE by sending the first message to the first base station, thereby enabling WD to access the network through the UE. Compared with the prior art in which the WD is in direct communication with a base station for providing service for the WD, the WD and the UE are in a short distance in normal conditions, so that the WD needs less transmission power when transmitting uplink data through the UE, the WD consumes less power, and the WD standby time can be prolonged.

In a first possible implementation manner of the third aspect, before the first MME receives the eighth message sent by the second MME, the method for accessing the network through the user equipment provided by the present application further includes: the first MME receives a sixth message which is sent by the UE and used for requesting WD to access the network through the UE from the first MME; after the first MME receives the sixth message sent by the UE, the first MME sends a ninth message to the second MME for requesting uplink S1 information of the WD.

In this application, after the first MME receives the sixth message sent by the UE, the first MME may send a ninth message to the second MME to request the uplink S1 information of the WD from the second MME, so that the first MME may determine, according to the uplink S1 information, whether the first base station, the second MME and the serving gateway SGW of the WD satisfy the network connection relationship, and further determine whether the UE can provide the relay service for the WD.

In a second possible implementation manner of the third aspect, in a case that the MME of WD is changed from the current second MME to the third MME, or the SGW of WD is changed, the method for accessing the network through the user equipment further includes: and the first MME receives a tenth message which is sent by the third MME or the second MME and used for notifying the first MME that the uplink S1 information of WD is updated.

In the present application, since the uplink S1 information of WD may be changed when the MME or SGW of WD is changed, the second MME or the third MME (i.e., the changed MME) may notify the first MME (i.e., the MME of UE) of the change of the uplink S1 information of WD by sending a tenth message to the first MME, so that the first MME may determine whether the first base station and the third MME or SGW satisfy the network connection relationship according to the updated uplink S1 information, and the first MME may determine whether the UE may continue to provide the relay service for WD.

Wherein, when the MME of WD changes, the tenth message may be sent by the third MME to the first MME. When the SGW of the WD changes (i.e., the MME of the WD has not changed), a tenth message may be sent by the second MME to the first MME.

In a third possible implementation manner of the third aspect, in a case that a base station providing service for a UE is switched from a first base station to a second base station, the method for accessing a network through user equipment provided by the present application further includes: the first MME determines that the second base station and the second MME or the SGW of WD do not meet the network connection relation according to the context of the UE; and the first MME sending an indication message to the second base station for the first MME to indicate to the second base station that the WD cannot access the network through the UE.

In this application, when the first MME determines that the network connection relationship between the second base station and the second MME or the SGW of the WD is not satisfied, the first MME may indicate, to the second base station, that the WD cannot continue to access the network through the UE by sending an indication message to the second base station, so that the second base station may delete the first mapping relationship stored in the second base station in time, and thus, resources of the second base station may be saved.

For the third aspect, the technical effect of the third aspect, other possible implementation manners of the third aspect, and the technical effect of other possible implementation manners of the third aspect, reference may be specifically made to the above description of the first aspect or any one of its possible implementation manners, or the related description of the second aspect or any one of its possible implementation manners, and details are not repeated here.

In a fourth aspect, a method for accessing a network by a user equipment is provided, the method comprising: the second MME (namely the MME of the WD) acquires uplink S1 information of the WD; and the second MME sends an eighth message carrying the uplink S1 information to the first MME (i.e., the MME of the UE).

In a first possible implementation manner of the fourth aspect, in the method for accessing a network by a user equipment provided by the present application, the acquiring, by the second MME, uplink S1 information of the WD includes: and the second MME acquires uplink S1 information of the WD according to the context of the WD.

In a second possible implementation manner of the fourth aspect, before the second MME sends the eighth message to the first MME, the method for accessing the network through the user equipment provided by the present application further includes: the second MME receives an eleventh message which is sent by the WD and used for requesting the WD to switch the direct path of the WD to the indirect path of the WD from the second MME, and the eleventh message carries the identity of the UE; and the second MME determines the first MME according to the identity of the UE.

In this application, after the second MME receives the eleventh message, the second MME may determine, according to the identifier of the UE carried in the eleventh message, an MME of the UE, that is, the first MME.

In a third possible implementation manner of the fourth aspect, before the second MME acquires uplink S1 information of the WD, the method for accessing the network through the user equipment provided by the present application further includes: the second MME receives a ninth message sent by the first MME requesting uplink S1 information of the WD. Further, the method for the second MME to send the eighth message to the first MME includes: and after the second MME receives the ninth message sent by the first MME, the second MME sends an eighth message to the first MME.

In a fourth possible implementation manner of the fourth aspect, in a case that the MME of WD is changed from the second MME to the third MME, or the SGW of WD is changed, the method for accessing the network through the user equipment further includes: the third MME or the second MME sends a tenth message to the first MME for notifying the first MME that the uplink S1 information of WD has been updated.

For a description of the fourth aspect, a technical effect of the fourth aspect, other possible implementation manners of the fourth aspect, and other possible implementation manners of the fourth aspect, reference may be specifically made to the above description of the first aspect or any one of its possible implementation manners, or the second aspect or any one of its possible implementation manners, or the third aspect or any one of its possible implementation manners, and details are not repeated herein.

In a fifth aspect, a method for accessing a network by a user equipment is provided, and the method includes: after WD and UE discover each other, WD transmits to UE a fifth message for WD to request to UE to switch the direct path to the indirect path, or WD transmits to the second MME (i.e., MME of WD) an eleventh message for WD to request to second MME to switch the direct path of WD to the indirect path of WD. Wherein, the direct path is a path between WD and a base station providing service for WD, and the indirect path is a path between WD, UE and a base station providing service for UE.

In a first possible implementation manner of the fifth aspect, after the WD sends, to the UE, a fifth message for requesting, from the WD to the UE, to switch the direct path to the indirect path, the method for accessing the network through the user equipment provided by the present application further includes: WD receives a seventh message sent by UE for instructing to switch the indirect path to the direct path.

For a description of the fifth aspect, the technical effect of the fifth aspect, other possible implementation manners of the fifth aspect, and other possible implementation manners of the fifth aspect, reference may be specifically made to the above-mentioned description of the first aspect or any one of its possible implementation manners, or the second aspect or any one of its possible implementation manners, or the third aspect or any one of its possible implementation manners, and details are not described herein again.

In a sixth aspect, a base station is provided, the base station being a first base station (i.e. a base station serving a UE), the base station comprising: the access control method comprises a receiving module, an allocating module and an establishing module, wherein the receiving module is used for receiving a first message which is sent by a first MME (namely MME of UE) and used for the first MME to request WD to access a network through the UE from a first base station, and the first message carries uplink S1 information of the WD; the distribution module is used for distributing a PDCP identifier for identifying the uplink data to be transmitted as WD data for the WD according to the first message received by the receiving module; the establishing module is configured to establish a first mapping relationship (i.e., a mapping relationship between a DRB between the UE and the first base station and an S1 bearer between the first base station and an SGW of the WD) according to the uplink S1 information received by the receiving module and the PDCP identifier allocated to the WD by the allocating module.

It should be noted that, the base station provided in the present application includes, but is not limited to, the receiving module, the allocating module and the establishing module in the above sixth aspect, and the functions of the receiving module, the allocating module and the establishing module in the above sixth aspect include, but are not limited to, the functions described above. The base station may include a unit/module for performing the method for accessing the network by the ue according to the first aspect or any one of its possible implementations, where the unit/module is configured to logically divide the base station for performing the method for accessing the network by the ue according to the first aspect or any one of its possible implementations.

For the description of the technical effect of the sixth aspect, reference may be specifically made to the above description of the technical effect of the first aspect or any one of the possible implementation manners thereof, and details are not repeated here.

In a seventh aspect, a UE is provided, where the UE includes: the receiving module is used for receiving a fifth message which is sent by the WD and used for requesting the WD to switch the direct path to the indirect path from the UE, wherein the direct path is a path between the WD and a base station providing services for the WD, and the indirect path is a path between the WD, the UE and the base station providing services for the UE; the sending module is configured to send, to the MME of the UE, a sixth message for the UE to request WD from the MME of the UE to access the network through the UE according to the fifth message received by the receiving module.

It should be noted that, the UE provided in the present application includes, but is not limited to, the receiving module and the transmitting module in the seventh aspect, and the functions of the receiving module and the transmitting module in the seventh aspect include, but are not limited to, the functions described above. The UE may include a unit/module for performing the method for accessing the network by the UE according to the second aspect or any one of its possible implementations, where the unit/module is a logical partition of the UE for performing the method for accessing the network by the UE according to the second aspect or any one of its possible implementations.

For the description of the technical effect of the seventh aspect, reference may be specifically made to the above description of the technical effect of the second aspect or any one of the possible implementation manners thereof, and details are not repeated here.

In an eighth aspect, an MME is provided, the MME being a first MME, the MME comprising: the receiving module is used for receiving an eighth message sent by a second MME, the eighth message carries uplink S1 information of WD, the first MME is an MME of the UE, and the second MME is an MME of the WD; the determining module is configured to determine, according to the uplink S1 information received by the receiving module, that the first base station and the serving gateways SGW of the second MME and WD all satisfy a network connection relationship, where the first base station provides a service for the UE; the sending module is configured to send, to the first base station, a first message for the first MME to request the first base station to access the network by the UE.

It should be noted that, the MME (i.e., the first MME) provided in the present application includes, but is not limited to, the receiving module, the determining module and the sending module in the above eighth aspect, and the functions of the receiving module, the determining module and the sending module in the above eighth aspect include, but are not limited to, the functions described above. The MME may include units/modules for performing the method for accessing a network by a user equipment according to the third aspect or any one of the possible implementations thereof, and the units/modules are logical partitions of the MME for performing the method for accessing a network by a user equipment according to the third aspect or any one of the possible implementations thereof.

For the above description of the technical effect of the eighth aspect, reference may be specifically made to the above description of the technical effect of the third aspect or any one of the possible implementation manners thereof, and details are not repeated here.

In a ninth aspect, an MME is provided, the MME being a second MME, the MME comprising: the system comprises an acquisition module and a sending module, wherein the acquisition module is used for acquiring uplink S1 information of the WD, and the second MME is an MME of the WD; the sending module is configured to send an eighth message to the first MME, where the eighth message carries uplink S1 information, and the first MME is an MME of the UE.

It should be noted that, the MME (i.e., the second MME) provided in the present application includes, but is not limited to, the acquisition module and the transmission module in the above ninth aspect, and the functions of the acquisition module and the transmission module in the above ninth aspect include, but are not limited to, the functions described above. The MME may include units/modules for performing the method for accessing a network by a user equipment according to the fourth aspect or any one of the possible implementations thereof, and the units/modules are logically divided for performing the method for accessing a network by a user equipment according to the fourth aspect or any one of the possible implementations thereof.

For the above description of the technical effect of the ninth aspect, reference may be specifically made to the above description of the technical effect of the fourth aspect or any one of the possible implementation manners thereof, and details are not repeated here.

In a tenth aspect, there is provided a WD comprising: a sending module, configured to send, to the UE, a fifth message for requesting, by the WD, the UE to switch the direct path to the indirect path, or send, to the second MME (i.e., an MME of the WD), an eleventh message for requesting, by the WD, the second MME to switch the direct path of the WD to the indirect path of the WD. Wherein, the direct path is a path between WD and a base station providing service for WD, and the indirect path is a path between WD, UE and a base station providing service for UE.

In the first to tenth aspects, the information on the upstream S1 of the WD in the present application includes: an identity of an MME of WD, an MME S1 interface user equipment identity of WD, a plurality of evolved packet system EPS bearer identities of WD, and an internet protocol IP address of an SGW, an S1 interface tunnel endpoint identity and a quality of service QoS value corresponding to each EPS bearer identity.

It should be noted that the WD provided by the present application includes, but is not limited to, the transmitting module in the tenth aspect, and the transmitting module in the tenth aspect has functions including, but not limited to, the functions described above. The WD may comprise means/modules for performing the method for accessing a network by a ue according to the fifth aspect or any one of its possible implementations, and the means/modules are a logical partition of the WD for performing the method for accessing a network by a ue according to the fifth aspect or any one of its possible implementations.

For the above description of the technical effect of the tenth aspect, reference may be specifically made to the above description of the technical effect of the fifth aspect or any one of the possible implementation manners thereof, and details are not repeated here.

In an eleventh aspect, there is provided a base station comprising a processor, a transceiver, and a memory; the memory is configured to store computer-executable instructions, and when the base station runs, the processor executes the computer-executable instructions stored in the memory, so that the base station performs the method for accessing the network through the user equipment according to the first aspect and any one of the possible implementation manners of the first aspect. For a specific method for accessing a network through a user equipment, reference may be made to the above description of the first aspect and any one of the possible implementation manners, and details are not described herein again.

In a twelfth aspect, a computer-readable storage medium is provided, in which one or more programs are stored, and the one or more programs include computer-executable instructions, and when a processor of a base station executes the computer-executable instructions, the base station performs the method for accessing a network through a user equipment according to the first aspect and any one of the possible implementations of the first aspect.

For specific technical effects of the eleventh aspect and the twelfth aspect, reference may be made to the above description of the technical effects of the first aspect, and details are not described here.

In a thirteenth aspect, a UE is provided, including: a processor, a transceiver, and a memory; the memory is configured to store computer-executable instructions, and when the UE runs, the processor executes the computer-executable instructions stored in the memory, so that the UE performs the method for accessing the network through the UE according to the second aspect and any one of the possible implementation manners of the second aspect. For a specific method for accessing a network through a user equipment, reference may be made to the above description of the second aspect and any one of the possible implementation manners, and details are not described herein again.

In a fourteenth aspect, a computer-readable storage medium is provided, in which one or more programs are stored, and the one or more programs include computer-executable instructions, and when a processor of a UE executes the computer-executable instructions, the UE performs the method for accessing a network through a user equipment according to the second aspect and any one of the possible implementation manners thereof.

For the technical effects of the thirteenth aspect and the fourteenth aspect, reference may be made to the above description of the technical effects of the second aspect, and details are not described here.

In a fifteenth aspect, an MME is provided, comprising: a processor, a transceiver, and a memory; the memory is configured to store computer executable instructions, and when the MME runs, the processor executes the computer executable instructions stored in the memory, so that the MME executes the method for accessing a network through the user equipment according to the third aspect and any one of the possible implementation manners of the third aspect. For a specific method for accessing a network through a ue, reference may be made to the above description of the third aspect and any one of the possible implementation manners of the third aspect, and details are not described herein again.

In a sixteenth aspect, a computer-readable storage medium is provided, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include computer-executable instructions, and when the computer-executable instructions are executed by a processor of an MME, the MME performs the method for accessing a network by a user equipment according to the third aspect and any one of the possible implementations of the third aspect.

For the technical effects of the fifteenth aspect and the sixteenth aspect, reference may be made to the above description of the technical effects of the third aspect, and details are not described here.

In a seventeenth aspect, an MME is provided, comprising: a processor, a transceiver, and a memory; the memory is configured to store computer executable instructions, and when the MME runs, the processor executes the computer executable instructions stored in the memory, so that the MME executes the method for accessing the network through the user equipment according to the fourth aspect and any one of the possible implementation manners. For a specific method for accessing a network through a user equipment, reference may be made to the above description of the fourth aspect and any one of the possible implementation manners, and details are not described herein again.

In an eighteenth aspect, a computer-readable storage medium is provided, in which one or more programs are stored, and the one or more programs include computer-executable instructions, and when the processor of the MME executes the computer-executable instructions, the MME performs the method for accessing a network by a user equipment according to the fourth aspect and any one of the possible implementation manners.

For specific technical effects of the seventeenth aspect and the eighteenth aspect, reference may be made to the above description of the technical effects of the fourth aspect, and details are not repeated here.

In a nineteenth aspect, there is provided a WD, comprising: a processor, a transceiver, and a memory; the memory is configured to store computer-executable instructions, and when the WD runs, the processor executes the computer-executable instructions stored in the memory, so that the WD performs the method for accessing the network through the ue according to the fifth aspect and any one of the possible implementations of the fifth aspect. For a specific method for accessing a network through a user equipment, reference may be made to the above description of the fifth aspect and any one of the possible implementation manners, and details are not described herein again.

A twentieth aspect provides a computer-readable storage medium having one or more programs stored therein, the one or more programs comprising computer-executable instructions, which, when executed by a processor of a WD, cause the WD to perform the method of accessing a network by a user equipment of the fifth aspect and any one of its possible implementations.

In a twenty-first aspect, there is provided a wireless communication system comprising: the base station of the sixth or eleventh aspect, the UE of the seventh or thirteenth aspect, the MME (i.e. MME of UE) of the eighth or fifteenth aspect, the MME (i.e. MME of WD) of the ninth or seventeenth aspect, and the WD of the tenth or nineteenth aspect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic diagram of a network architecture of an EPS according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a hardware structure of a mobile phone according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a hardware structure of a smart watch according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a hardware structure of a base station according to an embodiment of the present invention;

fig. 5 is a schematic hardware structure diagram of a server according to an embodiment of the present invention;

fig. 6 is a first schematic diagram illustrating a method for accessing a network by a UE according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a second method for accessing a network by a UE according to an embodiment of the present invention;

fig. 8 is a third schematic diagram illustrating a method for accessing a network by a UE according to an embodiment of the present invention;

fig. 9 is a fourth schematic diagram illustrating a method for accessing a network by a UE according to an embodiment of the present invention;

fig. 10 is a fifth schematic diagram illustrating a method for accessing a network by a UE according to an embodiment of the present invention;

fig. 11 is a sixth schematic diagram illustrating a method for accessing a network by a UE according to an embodiment of the present invention;

fig. 12 is a first schematic structural diagram of a first base station according to an embodiment of the present invention;

fig. 13 is a second schematic structural diagram of a first base station according to an embodiment of the present invention;

fig. 14 is a first schematic structural diagram of a UE according to an embodiment of the present invention;

fig. 15 is a second schematic structural diagram of a UE according to an embodiment of the present invention;

fig. 16 is a first schematic structural diagram of a first MME according to an embodiment of the present invention;

fig. 17 is a second schematic structural diagram of a first MME according to an embodiment of the present invention;

fig. 18 is a first schematic structural diagram of a second MME according to an embodiment of the present invention;

fig. 19 is a second schematic structural diagram of a second MME according to an embodiment of the present invention;

fig. 20 is a third schematic structural diagram of a second MME according to an embodiment of the present invention;

fig. 21 is a fourth schematic structural diagram of a second MME according to the embodiment of the present invention;

FIG. 22 is a first schematic diagram illustrating the structure of a WD according to an embodiment of the present invention;

fig. 23 is a schematic structural diagram of a WD provided by the embodiment of the present invention.

Detailed Description

Technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

The terms "first", "second", and "third", etc. in the embodiments of the present invention are used for distinguishing different objects, not for describing a particular order of the objects. For example, the first message, the second message, the third message, etc. are for distinguishing different messages, rather than for describing a particular order of the messages.

In the description of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, multiple EPS bearer identities refers to two or more EPS bearer identities.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

First, some concepts that may be involved in embodiments of the present invention will be described.

The direct path in embodiments of the present invention (which may also be referred to as the direct path of the WD, and both may be interchanged herein) is the path between the WD and the base station serving the WD.

The indirect path in the embodiment of the present invention (which may also be referred to as an indirect path of WD, and both may be interchanged herein) is a path between WD, User Equipment (UE), and a base station that provides service to the UE.

The WD in the embodiments of the present invention may be understood as providing a relay service for the WD by the UE through the UE access network.

At present, the WD is small in volume and special in shape, so that the battery volume of the WD is small, and the battery capacity of the WD is small due to the limitation of the battery volume. When the WD communicates directly with the base station, the WD is typically located a relatively large distance from the base station, and therefore requires relatively large transmit power when the WD transmits data to the base station, resulting in relatively large power consumption of the WD and relatively short standby time of the WD.

The above problem is mainly caused when WD transmits uplink data and uplink signaling to a base station, and therefore, in order to solve the above problem, embodiments of the present invention provide a method for accessing a network by a UE, in which WD may access the network by the UE and transmit uplink data and uplink signaling to the base station, and since WD is usually closer to the UE, the transmission power required for WD to transmit uplink data and uplink signaling to the base station by the UE is smaller, so the power consumption of WD is smaller, and thus the standby time of WD can be prolonged.

It should be noted that the method for accessing a network through a UE provided in the embodiment of the present invention may support multiple WDs to access the network through the UE, and in order to describe the technical solution of the embodiment of the present invention more clearly, only one WD is exemplarily described in the embodiment of the present invention by accessing the network through the UE.

The method for accessing a network by a WD through a UE in the embodiment of the present invention is applied to a wireless communication system, and for example, a network architecture diagram of an Evolved Packet System (EPS) shown in fig. 1 shows a network architecture of a wireless communication system in the embodiment of the present invention. The network architecture of the EPS shown in fig. 1 includes: WD, UE, base station 1, base station 2, MME1, MME2, SGW1 and SGW2, wherein base station 1 serves UE, base station 2 serves WD, MME1 serves UE, SGW1 serves UE SGW, MME2 serves WD, SGW2 serves WD SGW. In practical applications, the connections between the plurality of devices are wireless connections, and fig. 1 is illustrated with solid lines for the convenience of intuitively showing the connection relationship between the devices.

In the prior art, in the network architecture of the EPS shown in fig. 1, when the WD transmits uplink data and uplink signaling of the WD, the WD directly transmits the uplink data and the uplink signaling of the WD to the base station 2, and after receiving the uplink data and the uplink signaling of the WD, the base station 2 transmits the uplink data of the WD to the SGW2, and the uplink signaling is transmitted to the MME 2. By using the method for accessing the network through the UE provided by the embodiment of the invention, the WD can firstly send the uplink data and the uplink signaling of the WD to the UE, the UE can send the uplink data and the uplink signaling of the WD to the base station 1 after receiving the uplink data and the uplink signaling of the WD, after receiving the uplink data and the uplink signaling of the WD, the base station 1 transmits the uplink data of the WD to the SGW2, transmits the uplink signaling of the WD to the MME2, that is, the WD may send uplink data and uplink signaling of the WD to the UE first, and then transmit the uplink data and uplink signaling of the WD through the UE, compared to prior art where the WD directly transmits uplink data and uplink signaling of the WD to the second base station, because WD is usually closer to UE, when WD transmits uplink data and uplink signaling through UE, the required transmission power is small and the power consumption of the WD is small, so that the standby time of the WD may be extended.

The UE in the embodiment of the present invention may be: mobile phones, tablet computers, notebook computers, ultra-mobile personal computers (UMPCs), netbooks, Personal Digital Assistants (PDAs), and the like.

For example, in the embodiment of the present invention, the UE shown in fig. 1 may be a mobile phone, and details of various components of the mobile phone in the embodiment of the present invention are described below with reference to fig. 2. As shown in fig. 2, the mobile phone includes: a processor 11, a Radio Frequency (RF) circuit 12, a power supply 13, a memory 14, an input unit 15, a display unit 16, an audio circuit 17, and the like. Those skilled in the art will appreciate that the configuration of the handset shown in fig. 2 does not constitute a limitation of the handset, and may include more or fewer components than those shown in fig. 2, or may combine some of the components shown in fig. 2, or may be arranged differently than those shown in fig. 2.

The processor 11 is a control center of the mobile phone, connects various parts of the whole mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 14 and calling data stored in the memory 14, thereby performing overall monitoring of the mobile phone. Alternatively, processor 11 may include one or more processing units; preferably, the processor 11 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 11.

The RF circuit 12 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 11; in addition, the uplink data is transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 12 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), etc.

The handset includes a power supply 13 (e.g., a battery) for supplying power to various components, and optionally, the power supply may be logically connected to the processor 11 through a power management system, so that functions of managing charging, discharging, and power consumption are implemented through the power management system.

The memory 14 may be used to store software programs and modules, and the processor 11 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 14. The memory 14 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, image data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 14 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 15 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 15 may include a touch screen 151 and other input devices 152. The touch screen 151, also referred to as a touch panel, may collect a touch operation performed by a user on or near the touch screen 151 (e.g., an operation performed by the user on or near the touch screen 151 using any suitable object or accessory such as a finger, a stylus, etc.), and drive a corresponding connection device according to a preset program. Alternatively, the touch screen 151 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 11, and can receive and execute commands sent by the processor 11. In addition, the touch screen 151 may be implemented in various types, such as resistive, capacitive, infrared, and surface acoustic wave. Other input devices 152 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 16 may be used to display information input by or provided to the user and various menus of the mobile phone. The display unit 16 may include a display panel 161, and optionally, the display panel 161 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like. Further, the touch screen 151 may cover the display panel 161, and when the touch screen 151 detects a touch operation thereon or nearby, the touch screen is transmitted to the processor 11 to determine the type of the touch event, and then the processor 11 provides a corresponding visual output on the display panel 161 according to the type of the touch event. Although in fig. 2 the touch screen 151 and the display panel 161 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch screen 151 and the display panel 161 may be integrated to implement the input and output functions of the mobile phone.

Audio circuitry 17, a speaker 171 and a microphone 172 for providing an audio interface between the user and the handset. The audio circuit 17 may transmit the electrical signal converted from the received audio data to the speaker 171, and convert the electrical signal into a sound signal by the speaker 171 for output; on the other hand, the microphone 172 converts the collected sound signals into electrical signals, which are received by the audio circuit 17 and converted into audio data, which are then output to the RF circuit 12 for transmission to, for example, another cell phone, or to the memory 14 for further processing.

The handset may also include various sensors. Such as gyroscope sensors, hygrometer sensors, infrared sensors, magnetometer sensors, etc., and will not be described in detail herein.

Although not shown, the mobile phone may further include a wireless fidelity (WiFi) module, a bluetooth module, and the like, which are not described herein again.

The WD in the embodiments of the present invention may be a smart watch, a smart bracelet, Virtual Reality (VR) glasses, or the like.

Illustratively, in embodiments of the present invention, the WD shown in fig. 1 may be a smart watch. As shown in fig. 3, the smart watch includes: a processor 21, a Radio Frequency (RF) circuit 22, a power supply 23, a memory 24, an input unit 25, a display unit 26, and the like. Those skilled in the art will appreciate that the configuration of the smart watch illustrated in fig. 3 does not constitute a limitation of the smart watch, and may include more or fewer components than those illustrated in fig. 3, or may combine some of the components illustrated in fig. 3, or may be arranged differently than those illustrated in fig. 3. In the embodiment of the present invention, for specific descriptions of each component in the smart watch shown in fig. 3, reference may be made to the above description of the corresponding component in the mobile phone shown in fig. 2, and details are not described here again.

In the embodiment of the present invention, the hardware structures of the base station 1 and the base station 2 shown in fig. 1 are similar. For example, the hardware structures of the base station 1 and the base station 2 shown in fig. 1 may refer to the constituent elements of the base station shown in fig. 4. As shown in fig. 4, the base station includes: the radio frequency remote unit (RRU), the baseband processing unit (BBU), and the antenna, the RRU and the BBU may be connected by an optical fiber, the RRU is connected to the antenna by a coaxial cable and a power divider (coupler), and generally, one BBU may be connected to a plurality of RRUs.

The RRU may include 4 modules: the digital intermediate frequency module, the transceiver module, the power amplifier module and the filter module. The digital intermediate frequency module is used for modulation and demodulation, digital up-down frequency conversion, digital-to-analog conversion and the like of optical transmission; the transceiver module completes the conversion from the intermediate frequency signal to the radio frequency signal; and after the radio frequency signal is amplified by the power amplification module and filtered by the filtering module, the radio frequency signal is transmitted out through an antenna.

The BBU is used to perform baseband processing functions (coding, multiplexing, modulation, spreading, etc.) of a Uu interface (i.e., an interface between the UE and the base station), interface functions of a logic interface between a Radio Network Controller (RNC) and the base station, signaling processing, local and remote operation and maintenance functions, and a working state monitoring and alarm information reporting function of the base station system.

For example, in the embodiment of the present invention, the MME1, the SGW1, the MME2, and the SGW2 shown in fig. 1 may be implemented by integrating each functional module of the MME1, the SGW1, the MME2, and the SGW2 on a server, and each constituent component of the server is specifically described below with reference to fig. 5. As shown in fig. 5, the server includes: processor 31, memory 32, I/O interface 33, and bus 34.

The processor 31 is a control center of the server, connects various parts of the entire server using various interfaces and lines, and performs various functions of the server and processes data by running or executing software programs and/or modules stored in the memory 32 and calling data stored in the memory 32, thereby performing overall monitoring of the server. Alternatively, the processor 31 may include one or more processing units; preferably, the processor 31 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 31.

The memory 32 may be used to store software programs and modules, and the processor 31 executes various functional applications of the server and data processing by operating the software programs and modules stored in the memory 32. The memory 32 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The I/O interface 33 is also an input/output interface, the processor 31 is connected to the I/O interface 33 through a bus 34 of the server, and the I/O interface 33 is further connected to other devices, so as to finally realize information transmission between the processor 31 and other devices.

In practical application, the method for accessing the network through the UE provided by the embodiment of the present invention can be applied to five scenarios. Wherein, scene 1 is: WD switches from a direct path to an indirect path; scene 2 is: WD switches from an indirect path to a direct path; scenario 3 is: a change in MME of WD (e.g., a change in MME of WD from a current second MME to a third MME) or a change in SGW of WD; scenario 4 is: the base station serving the UE is changed (e.g., the base station serving the UE is changed from a first base station to a second base station). The following describes an exemplary method for accessing a network through a UE according to an embodiment of the present invention in different scenarios.

Scene 1: WD switches direct path to indirect path

In scenario 1, due to the different process of WD triggering the switch from the direct path to the indirect path, the switch from the direct path to the indirect path in scenario 1 includes two possible implementations, which are described in detail below.

First possible implementation of scenario 1:

an embodiment of the present invention provides a method for accessing a network through a UE, and as shown in fig. 6, the method may include the following steps:

s101, mutual discovery between WD and UE.

Optionally, the mutual discovery process between the WD and the UE may be: the method comprises the steps that UE sends a first broadcast message, wherein the first broadcast message can carry an identifier of the UE, and after WD receives the first broadcast message sent by the UE, WD can know that the UE exists around (namely, WD finds the UE); the corresponding WD sends a second broadcast message, where the second broadcast message may carry an identifier of the WD, and after the UE receives the second broadcast message sent by the WD, the UE may know that there is a WD around (i.e., the UE finds the WD).

The UE identifier may be a globally unique temporary user equipment identifier (GUTI) of the UE, and the WD identifier may be a GUTI of the WD.

Optionally, after the WD and the UE mutually discover, the WD may start to perform S102 described below.

S102, WD sends an eleventh message to the second MME.

The second MME is an MME of WD, and the eleventh message is used for the WD to request the second MME to switch the direct path of WD to the indirect path of WD.

The eleventh message may carry an identity of the UE and an identity of the WD.

For example, the eleventh message may be an indirect path handover request message, or may also be another Non-Access-Stratum (NAS) message, which may be determined according to an actual use requirement, and the embodiment of the present invention is not limited.

S103, the second MME receives the eleventh message and determines the first MME according to the identity of the UE carried in the eleventh message.

The first MME is an MME of the UE.

Optionally, after receiving the eleventh message sent by the WD, the second MME acquires the identifier of the UE carried in the eleventh message, and determines the MME of the UE, that is, the first MME, according to the identifier of the UE.

S104, the second MME acquires uplink S1 information of the WD.

Optionally, the second MME may obtain uplink S1 information of the WD according to the context of the WD.

After receiving an eleventh message sent by the WD, the second MME acquires an identifier of the WD carried in the eleventh message, acquires a context of the WD corresponding to the identifier of the WD according to the identifier of the WD, and acquires uplink S1 information of the WD according to the context of the WD.

Optionally, the uplink S1 information of the WD may include: an identity of the second MME, MME S1 interface user equipment identities (unique identities of the UE association over the S1 interface with the MME, MME UE S1-AP ID), a plurality of EPS bearer identities (EPS bearer IDs) of the WD, and an internet protocol address (SGW internet protocol address, SGW IP address) of the SGW corresponding to each EPS bearer ID, an S1 interface tunnel endpoint identity (S1 tunnel endpoint identifier, S1-TEID), and a Quality of Service (Quality of Service) value.

In the embodiment of the present invention, since there is only one SGW for each WD in a normal case, in the information of the uplink S1 of the WD, the SGW IP address corresponding to each EPS bearer ID is the IP address of the SGW of the WD. That is, in the information of the WD ascending S1, the SGW IP addresses corresponding to the EPS bearer IDs may be the same.

In the embodiment of the present invention, in the uplink S1 information of the WD, the identifier of the second MME may be used to identify the MME of the WD. The MME UE S1-AP ID described above may be used to identify WD on the S1-AP interface (i.e., the signaling plane interface). The multiple EPS bearer identities of the WD may be used to identify multiple EPS bearers between the WD and a Packet Data Network Gateway (PGW) of the WD (where an S5/8 bearer is between an SGW of the WD and a PGW of the WD, and the S5/8 bearer is a part of the EPS bearer). The SGW IP address described above may be used to identify the SGW of the WD. The above-described S1 interface tunnel endpoint identification may be used to identify a tunnel between a base station of a WD and an SGW of the WD over an S1-U interface (i.e., user plane interface). The QoS value may be used to identify the quality of service of the EPS bearer.

In combination with the functions of each identifier in the uplink S1 information of the WD, specifically, when the identifier is applied in the method for accessing the network by the UE provided in the embodiment of the present invention, the identifier may specifically be:

the identifier of the second MME and the MME UE 1-AP ID may be used for forwarding, by the first base station, the uplink signaling of the WD to the second MME after the first base station identifies the second MME and the WD. A detailed method for the first base station to obtain the identifier of the second MME and the MME UE S1-AP ID, and a method for forwarding the uplink signaling of the WD to the second MME according to the identifier of the second MME and the MME UE S1-AP ID will be described in detail in the following embodiments.

Optionally, the multiple EPS bearer IDs of WD, the SGW IP address corresponding to each EPS bearer ID, the S1-TEID, and the QoS value are used for the first base station to establish the first mapping relationship (i.e., the mapping relationship between the DRB between the UE and the first base station and the S1 bearer between the first base station and the SGW of WD). A specific method for the first base station to obtain the multiple EPS bearer IDs of the WD, the SGW IP address, the S1-TEID, and the QoS value corresponding to each EPS bearer ID, and a method for the first base station to establish the first mapping relationship according to the multiple EPS bearer IDs of the WD, the SGW IP address, the S1-TEID, and the QoS value corresponding to each EPS bearer ID will be described in detail in the following embodiments.

Optionally, the identifier of the second MME (i.e. the identifier of the MME of WD) is further used by the first MME to determine whether the first base station and the second MME satisfy the network connection relationship. Wherein, the condition that the first base station and the second MME satisfy the network connection relationship can be understood as: and signaling transmission can be carried out between the first base station and the second MME.

Optionally, the SGW IP address corresponding to each EPS bearer ID is an SGW IP address of WD, and is used by the first MME to determine whether the SGW of WD and the first base station satisfy a network connection relationship. Satisfying the network connection relationship between the first base station and the SGW of the WD may be understood as: data transmission may be performed between the first base station and the SGW of the WD.

S105, the second MME sends an eighth message to the first MME.

The eighth message may carry an identifier of the WD, an identifier of the UE, and uplink S1 information of the WD.

For example, the eighth message may be a relay access request message, or may also be another general packet radio service tunneling protocol for control plane (GTP-C) message, which may be specifically determined according to an actual use requirement, and the embodiment of the present invention is not limited.

And S106, the first MME receives the eighth message, and determines that the first base station, the second MME and the SGW of the WD all meet the network connection relation according to the uplink S1 information of the WD carried in the eighth message.

The first base station provides service for the UE.

Optionally, when the first base station and the SGWs of the second MME and WD all satisfy the network connection relationship, it may be understood that: signaling transmission may be performed between the first base station and the second MME, and data transmission may be performed between the first base station and the SGW of the WD.

After receiving the eighth message, the first MME may acquire an identifier of WD, an identifier of the UE, and uplink S1 information of WD, which are carried in the eighth message, and then the first MME may determine that the WD requests to access the network through the UE according to the identifier of WD and the identifier of the UE.

Optionally, the first MME determines, according to the identifier of the second MME and the SGW IP address of the WD (i.e., the SGW IP address corresponding to each EPS bearer ID) in the uplink S1 information of the WD carried in the eighth message, whether both the first base station and the SGW of the second MME and the WD satisfy the network connection relationship, and in a case that the first MME determines that both the first base station and the SGW of the second MME and the WD satisfy the network connection relationship, the first MME may determine that the first base station can be connected to the SGW of the second MME and the WD, that is, the first MME may determine that the first base station can transmit the uplink signaling of the WD to the MME of the WD after receiving the uplink signaling of the WD, and may determine that the first base station can transmit the uplink data of the WD to the SGW of the WD after receiving the uplink data of the WD, so that the first MME may determine that the UE may provide the relay service for the WD.

Optionally, when the first MME determines that the network connection relationship between the first base station and the SGW of the second MME or WD is not satisfied, the first MME may determine that the first base station cannot be connected to the SGW of the second MME or WD, that is, the first MME may determine that the data of WD cannot be transmitted to the SGW of WD after the first base station receives uplink data of WD, or the first MME may determine that the uplink signaling of WD cannot be transmitted to the MME of WD after the first base station receives uplink signaling of WD, so that the first MME may determine that the UE cannot provide the relay service for WD.

Further, after step S106, if the UE is in the connected state, step S107 is directly performed; if the UE is in the idle state, the MME of the UE (i.e., the first MME) pages the UE (paging), and after the UE enters the connected state, step S106 is executed.

S107, the first MME sends a first message to the first base station, and the first message carries uplink S1 information of the WD.

The first base station provides service for the UE.

The first message is used for the first MME to request the first base station for WD to access the network through the UE. The first message carries uplink S1 information of the WD.

Optionally, the first message may carry an identifier of the WD and uplink S1 information of the WD.

For example, the first message may be a WD access request message, and may also be other S1 interface application protocol messages, which may be specifically determined according to actual usage requirements, and the embodiment of the present invention is not limited.

S108, the first base station receives the first message, and allocates a PDCP identifier to the WD according to the first message.

After receiving the first message, the first base station acquires the identifier of the WD carried in the first message, determines that the WD requests to access the network through the UE according to the identifier of the WD, and allocates the PDCP identifier for the WD.

Optionally, the PDCP identity may be an identity allocated by the first base station for the WD on the PDCP layer. The PDCP identifier may be used to identify the uplink data to be transmitted as data of the WD, and may also be used to identify the uplink signaling to be transmitted as signaling of the WD.

S109, the first base station establishes a first mapping relation according to the uplink S1 information of the WD and the PDCP identifier.

The first mapping relationship is a mapping relationship between a Data Radio Bearer (DRB) between the UE and the first base station and an S1 bearer between the first base station and the SGW of the WD.

Optionally, after receiving the first message, the first base station may obtain uplink S1 information of the WD, which is carried in the first message, and establish the first mapping relationship according to the uplink S1 information of the WD and the PDCP identifier allocated to the WD by the first base station.

Optionally, the method for the first base station to establish the first mapping relationship according to the uplink S1 information of the WD and the PDCP identifier allocated by the first base station to the WD may include S109a-S109 c:

s109a, the first base station acquires a first S1-TEID and a first QoS value corresponding to a first EPS bearer ID according to the uplink S1 information of the WD, wherein the first EPS bearer ID is one of the EPS bearer IDs.

S109b, the first base station determines the identification of the first DRB corresponding to the first QoS value according to the corresponding relation between the identification of the DRB and the QoS value.

S109c, the first base station establishes a first mapping relation according to the identification of the first DRB, the PDCP identification, the SGW IP address of the WD and the first S1-TEID.

For example, assuming that the identifier of the first DRB is denoted as a UE DRB ID, the PDCP identifier is denoted as a WD PDCP ID, the SGW IP address of the WD (that is, the SGW IP address corresponding to each EPS bearer ID) is denoted as a WD SGW IP address, and the first S1-TEID is denoted as a WD S1-TEID, the first mapping relationship established by the first base station may be represented as: UE DRB ID + WD PDCP ID ← → WD S1-TEID + WD SGW IP address.

S110, the first base station sends a fourth message to the UE.

And S111, the UE receives the fourth message and establishes a second mapping relation according to the fourth message.

The fourth message is used to instruct the UE to establish a second mapping relationship, where the second mapping relationship is a mapping relationship between a PC5 bearer between the WD and the UE and a DRB between the UE and the first base station.

Optionally, the first possible implementation manner is: the fourth message may carry an identifier of the WD, an identifier carried by the PC5, a PDCP identifier, and an identifier of the first DRB. After receiving the fourth message, the UE may establish the second mapping relationship according to the identifier of WD, the identifier carried by the PC5, the PDCP identifier, and the identifier of the first DRB, which are carried in the fourth message.

In a first possible implementation manner, the identifier carried by the PC5 may be an identifier of a PC5 bearer to be established, which is specified by the first base station for the UE according to the identifier of the first DRB and corresponds to the identifier of the first DRB.

Optionally, the second possible implementation manner is: the fourth message may carry an identifier of the WD, an identifier of the PDCP and an identifier of the first DRB, and after the UE receives the fourth message, the UE may generate, through the identifier of the first DRB carried in the fourth message, an identifier of the PC5 bearer to be established, which corresponds to the identifier of the first DRB. The UE may then establish a second mapping relationship according to the identifier of the WD, the identifier of the PC5 bearer, the PDCP identifier, and the identifier of the first DRB.

Optionally, the fourth message may be a Radio Resource Control (RRC) reconfiguration message, or may be another RRC message, which may be specifically determined according to an actual use requirement, and the embodiment of the present invention is not limited thereto.

For example, assuming that the identifier of WD is represented as WD ID, the identifier of PC5 bearer is represented as PC5 bear ID, the PDCP identifier is represented as WD PDCP ID, and the identifier of the first DRB is represented as UE DRB ID, the second mapping relationship established by the UE according to the identifier of WD, the identifier of PC5 bearer, the PDCP identifier, and the identifier of the first DRB may be represented as: WD ID + PC5 bearer ID ← → UE DRB ID + WD PDCP ID.

In the embodiment of the present invention, the first base station sends the fourth message to the UE to instruct the UE to establish the second mapping relationship (that is, the mapping relationship between the PC5 bearer between the WD and the UE and the DRB between the UE and the first base station), so that after the WD sends the uplink data of the WD to the UE, the UE may forward the uplink data to the first base station according to the second mapping relationship.

And S112, establishing a PC5 bearer between the UE and the WD.

Optionally, after the UE establishes the second mapping relationship, the UE may establish a PC5 bearer between the UE and the WD according to an identifier of the PC5 bearer in the second mapping relationship, where the identifier of the PC5 bearer is the identifier of the PC5 bearer in the second mapping relationship.

S113, the first base station sends a response message of the first message to the first MME.

Optionally, after S111, the UE may notify the first base station that the UE establishes the second mapping relationship, so that the first base station may send a response message of the first message to the first MME, where the response message of the first message is used to confirm, to the first MME, that the UE allows WD to access the network through the UE, and thus the first MME may confirm that the UE allows WD to access the network through the UE.

It should be noted that the execution order of S112 and S113 is not limited in the embodiment of the present invention. That is, in the embodiment of the present invention, S112 may be executed first, and then S113 may be executed; s113 may be performed first, and then S112 may be performed; s112 and S113 may also be performed simultaneously.

And S114, the first MME sends a response message of the eighth message to the second MME.

Optionally, after the first MME receives the response message of the first message, the first MME may send a response message of an eighth message to the second MME.

S115, the second MME sends a response message of the eleventh message to the WD.

Optionally, after the second MME receives the response message of the eighth message, the second MME sends a response message of an eleventh message to the WD.

In the method for accessing to a network through a UE provided by the embodiment of the present invention, a first MME (i.e., an MME of the UE) may send a first message requesting WD to access to the network through the UE to a first base station (i.e., a base station providing service to the UE), so that the first base station allocates a PDCP identifier to WD according to the first message, and establishes a mapping relationship between a DRB between the UE and the first base station and an S1 bearer between the first base station and an SGW of the WD according to uplink S1 information of the WD and the PDCP identifier carried in the first message, so that the WD may access to the network through the UE, and the WD may forward uplink data of the WD to the first base station through the UE, and the first base station sends the uplink data to an SGW of the WD, so that the SWG of the WD forwards the uplink data again, that is, that the uplink data of the WD may be forwarded to the SGW of the UE and the first base station. Compared with the prior art in which the WD is in direct communication with a base station for providing service for the WD, the WD and the UE are in a short distance in normal conditions, so that the WD needs less transmission power when transmitting uplink data through the UE, the WD consumes less power, and the WD standby time can be prolonged.

Second possible implementation of scenario 1:

as shown in fig. 7, S102 and S103 shown in fig. 6 may be replaced by the following S202 to S206, and S115 shown in fig. 6 may be replaced by the following S215 and S216, only the steps S202 to S206 and S215 and S216 of the replacement are described below, and for other steps and processes, reference may be made to the relevant description in the first possible implementation manner, and details are not repeated here.

S202, WD sends a fifth message to the UE.

Wherein the fifth message is for the WD to request the UE to switch the direct path of the WD to the indirect path of the WD.

The fifth message may carry an identifier of the WD. The identity of WD may be GUTI of WD.

For example, the fifth message may be an indirect path switching request message, or may be another PC5 interface message, which may be determined according to actual usage requirements, and the embodiment of the present invention is not limited.

S203, the UE receives the fifth message.

Optionally, after receiving the fifth message, the UE may determine that the WD requests to switch the direct path of the WD to the indirect path of the WD according to the identifier of the WD carried in the fifth message.

After the UE receives the fifth message sent by WD, the UE continues to perform step S204.

S204, the UE sends a sixth message to the first MME.

The sixth message is used for the UE to request the first MME to access the network via the UE. Optionally, the sixth message may also carry an identifier of the WD.

For example, the sixth message may be a WD Access request message, or may also be another Non-Access Stratum (NAS) message, which may be determined according to actual usage requirements, and the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, after receiving a fifth message sent by the UE and requesting the WD to switch the direct path to the indirect path, the UE may send a sixth message to the MME of the UE to request the WD to access the network through the UE, so as to enable the WD to access the network through the UE.

And S205, the first MME receives a sixth message.

Optionally, after the first MME receives the sixth message sent by the UE, the first MME may obtain an identifier of a WD, which is carried in the sixth message, and determine the second MME according to the identifier of the WD.

After the first MME determines the second MME, the first MME may proceed to step S206.

S206, the first MME sends a ninth message to the second MME.

Wherein, the ninth message may carry an identifier of WD. The ninth message is for the first MME requesting uplink S1 information of the WD from the second MME.

For example, the ninth message may be an uplink S1 information request message of the WD, or may also be another gprs (general packet radio service tunneling protocol) control plane (GTP-C) message, which may be specifically determined according to an actual use requirement, and embodiments of the present invention are not limited thereto.

And S207, the second MME receives the ninth message.

Optionally, after the second MME receives the ninth message sent by the first MME, the second MME may determine, according to the ninth message, that the MME sending the ninth message is the first MME, that is, the MME of the UE.

S215, the first MME sends a response message of the sixth message to the UE.

It should be noted that, in the embodiment of the present invention, the execution sequence of the above S114 and S215 is not limited, that is, in the embodiment of the present invention, S114 may be executed first, and then S215 may be executed; s215 may be performed first, and then S114 may be performed; s114 and S215 may also be performed simultaneously.

S216, the UE sends a response message of the fifth message to the WD.

Optionally, after receiving the response message of the sixth message sent by the first MME, the UE may send a response message of the fifth message to the WD.

Optionally, with reference to fig. 6 or fig. 7, after the above S112, in the method for accessing a network by a UE according to an embodiment of the present invention, a WD may further send uplink data to the UE, where the uplink data includes a PDCP identifier, where the PDCP identifier is used to identify the uplink data as the uplink data of the WD, and after the UE receives the uplink data, the uplink data is sent to a first base station according to a bearer indicated by a second mapping relationship, and after the first base station receives the uplink data, the uplink data may be sent to an SGW of the WD according to the PDCP identifier and the bearer indicated by the first mapping relationship, so that the WD may transmit the uplink data of the WD after accessing the network by the UE.

Optionally, with reference to fig. 6 or fig. 7, after S108, the method for accessing to the network through the UE according to the embodiment of the present invention may further include:

s116, the first base station stores the identity of the second MME and the WD MME UE S1-AP ID in the first message.

The identity of the second MME and the MME UE S1-AP ID of the WD are used to send uplink signaling of the WD.

Optionally, after receiving the first message sent by the first MME, the first base station may obtain the uplink S1 information of the WD, which is carried in the first message, and store the identifier of the second MME and the MME UE S1-AP ID of the WD in the uplink S1 information of the WD, so as to forward the uplink signaling of the WD to the MME of the WD (i.e., the second MME).

In the embodiment of the present invention, after receiving the first message sent by the first MME, the first base station may store the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, which are used for sending the uplink signaling of WD, and are carried in the first message, so that after the UE sends the uplink signaling sent by WD to the first base station, the first base station may send the uplink signaling to the MME of WD according to the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, that is, the WD may send the uplink signaling of WD to the MME of WD through the UE and the first base station, thereby completing sending the uplink signaling after the WD accesses the network through the UE.

It should be noted that, with reference to fig. 6, the embodiment of the present invention does not limit the execution sequence of S116 and S109-S115, that is, in the embodiment of the present invention, S116 may be executed first, and then S109-S115 may be executed; or executing S109-S115 first and then executing S116; s116 and S109-S115 may also be performed simultaneously.

Further, in conjunction with fig. 7, the embodiment of the present invention does not limit the execution sequence of S116 and S109-S216. That is, in the embodiment of the present invention, S116 may be executed first, and then S109 to S216 may be executed; or S109-S216 can be executed first, and then S116 can be executed; s116 and S109-S216 may also be performed simultaneously.

Optionally, after step S116, the WD may further send uplink signaling to the UE, where the uplink signaling includes a PDCP identifier, and the PDCP identifier is used to identify the uplink signaling of the WD, and after the UE receives the uplink signaling, the UE may send the uplink signaling to the first base station. After receiving the uplink signal, the first base station may obtain the identifier of the PDCP carried in the uplink signal, then the first base station finds the identifier of the second MME (i.e., MME of WD) and the MME UE S1-AP ID of WD stored in the first base station according to the PDCP identifier, and then the first base station sends the uplink signal to the second MME according to the identifier of the second MME and the MME UE S1-AP ID of WD, so that WD may transmit the uplink signal of WD after accessing the network through UE.

In the method for accessing to the network through the UE provided by the embodiment of the present invention, the uplink data of the WD may be forwarded to the SGW of the WD through the UE and the first base station, so that the WD can access to the network through the UE. Compared with the prior art in which the WD is directly communicated with the base station, the WD is usually closer to the UE, so that the WD needs less transmission power when the UE transmits uplink data and uplink signaling to the base station, the WD consumes less power, and the WD standby time can be prolonged.

Scene 2: WD switches from indirect path to direct path

Optionally, after the WD switches from the direct path of the WD to the indirect path of the WD, the WD may also switch from the indirect path of the WD to the direct path of the WD. For example, when the PC5 link quality between the WD and the UE deteriorates (e.g., the channel quality of the PC5 link between the WD and the UE is less than a preset channel quality threshold, where signal quality may be measured in terms of signal strength), the WD may switch from the indirect path of the WD to the direct path of the WD because the indirect path of the WD may not be able to continue to be used.

An embodiment of the present invention provides a method for accessing a network through a UE, and as shown in fig. 8, the method may include the following steps:

the PC5 link quality between S301, WD and UE deteriorates.

S302, when the WD detects a degradation of the PC5 link quality, the WD transmits the uplink data and the uplink signaling using the WD' S direct path.

S303, deleting the mapping relationship between the UE and WD when the UE detects the link disconnection of the PC 5.

In the embodiment of the invention, when the WD requests to access the network through the UE, the UE can store the mapping relation between the WD and the UE. Optionally, in order to save the storage resource of the UE, in the case that the UE detects that the PC5 link is disconnected (e.g., the UE does not receive the heartbeat packet sent by the WD within a period of time), the UE may delete the mapping relationship between the WD and the UE.

Optionally, in order to further save the storage resource of the UE, in the case that the UE detects that the PC5 link is disconnected, the UE may further delete the second mapping relationship established by the UE in the above scenario 1 (i.e., the mapping relationship between the PC5 bearer between the WD and the UE and the DRB between the UE and the first base station).

Optionally, in this embodiment of the present invention, when multiple WDs access the network through the UE, the UE may store the mapping relationship between the multiple WDs and the UE.

It should be noted that the embodiment of the present invention does not limit the execution sequence of S302 and S303, that is, in the embodiment of the present invention, S302 may be executed first, and then S303 may be executed; or executing S303 first and then executing S302; s302 and S303 may also be performed simultaneously.

S304, the UE sends a third message to the first base station.

Wherein the first base station provides service for the UE. The third message may carry an identifier of WD, and the third message is used to request the first base station to delete the first mapping relationship established by the first base station in scenario 1 (i.e., the mapping relationship between the DRB between the UE and the first base station and the S1 bearer between the first base station and the SGW of WD).

For example, the third message may be an indirect path release request message, or may be another S1 Application Protocol (S1 Application Protocol, S1-AP) message, which may be determined according to actual usage requirements, and the embodiment of the present invention is not limited thereto.

S305, the first base station receives the third message and deletes the first mapping relation according to the third message.

Optionally, after the first base station establishes the first mapping relationship in scenario 1, the first base station may send uplink data of the WD to the SGW of the WD according to the bearer indicated by the first mapping relationship. When the link quality of the PC5 deteriorates, the WD cannot transmit uplink data to the SGW of the WD according to the first mapping relationship because the WD cannot transmit uplink data using the indirect path. The first mapping relation may be deleted in order to save storage resources of the first base station.

Optionally, after the first base station receives the third message, the first base station may obtain an identifier of the WD carried in the third message, and delete the first mapping relationship corresponding to the identifier of the WD according to the identifier of the WD.

Optionally, after the first base station stores the identifier of the MME at WD (i.e. the identifier of the second MME) and the MME UE S1-AP ID at WD in scenario 1, the first base station may send the uplink signaling to the second MME according to the PDCP identifier, the identifier of the MME at WD stored in the first base station, and the MME UE S1-AP ID at WD. When the PC5 link is degraded, the WD cannot transmit the uplink signaling using the indirect path, and therefore the first base station cannot continue to transmit the uplink signaling to the second MME using the identity of the MME of WD and the MME UE S1-AP ID of WD stored in the first base station. The identity of the MME of WD and the MME UE S1-AP ID of WD stored in the first base station may also be deleted in order to save memory space of the first base station.

S306, the first base station sends a response message of the third message to the UE.

S307, the first base station sends a WD information update message to the first MME.

Wherein, the WD information update message is used to notify the first MME that the mapping relationship between the UE and the WD has been deleted.

In this embodiment of the present invention, after the first base station receives the third message sent by the UE, the first base station may know, according to the third message, that the mapping relationship between the UE and the WD has been deleted by the UE, so that the first base station may delete the established first mapping relationship according to the third message. Further, after the first base station deletes the first mapping relationship according to the third message, the first base station sends, to the first MME, a WD information update message for notifying that the first MME, the mapping relationship between the UE and the WD has been deleted. Because the first base station notifies the first MME that the mapping relationship between the UE and the WD has been deleted, the first MME can timely know that the mapping relationship between the UE and the WD has been deleted, and thus the first MME can allow other WDs to access the network through the UE.

S308, the first MME sends an indirect path release notification message to the second MME.

Wherein the indirect path release notification message is used to notify the second MME that the indirect path of WD has been released.

It should be noted that the execution sequence of S306 and S307 is not limited in the embodiment of the present invention. That is, in the embodiment of the present invention, S306 may be executed first, and then S307 may be executed; s307 may be executed first, and then S306 is executed; s306 and S307 may also be performed simultaneously.

According to the method for accessing the network through the UE, provided by the embodiment of the invention, after the WD is switched from the direct path to the indirect path, if the quality of the PC5 link of the WD is deteriorated, the WD can be switched from the indirect path to the direct path, and the uplink data and the uplink signaling of the WD are transmitted by using the direct path, namely under the condition that the quality of the PC5 link is deteriorated, the normal transmission of the uplink data and the uplink signaling of the WD can still be ensured.

Scene 3: change of WD MME (e.g. from current second MME to third MME) or change of WD SGW

Optionally, after the WD is switched from the direct path of the WD to the indirect path of the WD, for example, in a scenario in which the serving cell of the WD is changed, a scenario may occur in which the MME of the WD is changed (for example, the MME of the WD is changed from the current second MME to the third MME) or the SGW of the WD is changed.

Scenario 3 includes two specific cases, the first case is: when the serving cell of the WD is changed, the MME of the WD is changed from the current second MME to the third MME. The second case is: when the serving cell of the WD changes, the SGW of the WD changes. In the following, the method for accessing the network by the UE according to the embodiment of the present invention is exemplarily described in the above two cases.

First case of scenario 3:

an embodiment of the present invention provides a method for accessing a network through a UE, where when a serving cell of a WD changes, and an MME of the WD changes from a current second MME to a third MME, as shown in fig. 9, the method may include the following steps:

s401, changing the serving cell of WD.

Optionally, the process of changing the serving cell of the WD may include:

s401a, in case WD detects a link quality degradation between WD and the source base station, WD sends a measurement report to the source base station.

In the embodiment of the present invention, the link quality degradation between the WD and the source base station may be that the channel quality between the WD and the source base station is smaller than a preset channel quality threshold, and the channel quality may be measured by signal strength. The source base station is a base station that serves the WD before a change in the serving cell of the WD occurs.

The measurement report may carry an identifier of a serving cell of the UE and an identifier of a cell adjacent to a source serving cell of the WD, which satisfies a measurement threshold. The source cell is a cell serving the WD before a change of cell serving the WD occurs.

Optionally, the Identifier of the serving Cell of the UE and the Identifier of the neighboring Cell may both be an evolved universal mobile telecommunications system terrestrial radio access network Cell Global Identifier (ECGI).

Optionally, in this embodiment of the present invention, the WD may acquire the identifier of the serving cell of the UE in a process of discovering each other between the WD and the UE (e.g., S101 described in the foregoing scenario 1).

S401b, after the source base station receives the measurement report, the target serving cell of WD is determined.

The target serving cell is a serving cell to which WD is to be handed over, that is, the target serving cell is a cell that provides service for WD after the serving cell of WD is changed.

In the embodiment of the present invention, after receiving a measurement report sent by WD, a source base station may obtain an identifier of a serving cell of a UE and identifiers (hereinafter referred to as multiple first identifiers) of cells that satisfy a measurement threshold and are adjacent to a source serving cell of WD, which are carried in the measurement report, and determine whether the multiple first identifiers include the identifier of the serving cell of the UE, and if the multiple first identifiers include the identifier of the serving cell of the UE, the source base station determines the serving cell of the UE as a target serving cell of WD; if the plurality of first identifiers do not include the identifier of the serving cell of the UE, the source base station may arbitrarily select one cell from the plurality of cells indicated by the plurality of first identifiers as the target serving cell of the WD; or the source base station may select a cell with the best channel quality from the plurality of cells indicated by the plurality of first identifiers as the target serving cell of WD.

It should be noted that the source serving cell and the target serving cell of the WD may be served by the same base station, for example, both the source serving cell and the target serving cell of the WD are served by the source base station; alternatively, the WD source cell and the WD target cell may be served by different base stations, for example, the WD source cell is served by the source base station, the WD target cell is served by the target base station, and the target base station may be a base station that serves the WD after the WD target cell is changed.

S401c, the source base station instructs WD to handover to the target serving cell.

S401d, WD switches to the target serving cell according to the instruction of the source base station.

S402, the third MME sends an uplink S1 path update notification message to the WD.

The uplink path update notification message of the WD is used to notify the WD that the uplink S1 path of the WD needs to be updated, and when the WD needs to transmit uplink signaling after receiving the uplink S1 path update notification message transmitted by the third MME, the WD uses the direct path of the WD to transmit the uplink path update notification message.

Optionally, the uplink path update notification message S1 may also be another NAS message, which may be determined according to actual usage requirements, and the present invention is not limited thereto.

S403, the third MME updates uplink S1 information of WD.

S404, the third MME sends a tenth message to the first MME.

And the first MME is the MME of the UE. The tenth message is used to notify the first MME that the uplink S1 information of the WD is updated.

Optionally, the tenth message may carry an identifier of the WD, an identifier of the UE, and updated uplink S1 information of the WD.

For example, the tenth message may be an uplink S1 information update message of the WD, or may be another GTP-C message, which may be determined according to actual usage requirements, and the present invention is not limited thereto.

And S405, the first MME receives the tenth message and determines that the first base station and the third MME meet the network connection relation according to the updated uplink S1 information of the WD carried in the tenth message.

The first MME may determine that the uplink S1 information of the WD has been updated according to the identifier of the WD and the identifier of the UE carried in the tenth message.

Optionally, after the first MME receives the tenth message, the updated uplink S1 information of the WD carried in the tenth message is obtained, and according to the identifier of the third MME in the updated uplink S1 information of the WD, it is determined whether the network connection relationship is satisfied between the first base station and the third MME, and when the first MME determines that the network connection relationship is satisfied between the first base station and the third MME, the first MME may determine that the first base station is able to connect to the third MME, that is, the first base station may transmit the received uplink signaling of the WD to the third MME, so that the first MME may determine that the UE may continue to provide the relay service for the WD.

Optionally, when the first MME determines that the network connection relationship between the first base station and the third MME is not satisfied, the first MME may determine that the first base station cannot be connected to the third MME, that is, the first base station cannot transmit the received uplink signaling of the WD to the third MME, and the first MME may determine that the UE cannot continue to provide the relay service for the WD.

Optionally, if the first base station and the third MME satisfy the network connection relationship, it may be understood that: and signaling transmission can be carried out between the first base station and the third MME.

S406, the first MME sends a second message to the first base station.

Wherein the second message is used for requesting the first base station to update the identity of the MME of WD and the identity of the MME S1 interface user equipment of WD stored in the first base station.

Optionally, the updated uplink S1 information of the WD and the identifier of the WD may be carried in the second message.

For example, the second message may be a WD S1 link update request message, or may be other S1 interface application protocol messages, which may be determined according to actual usage requirements, and the present invention is not limited thereto.

And S407, the first base station receives the second message, and updates the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station according to the second message.

Optionally, after receiving the second message sent by the first MME, the first base station acquires the updated uplink S1 information of the WD, which is carried in the second message, and updates, according to the updated uplink S1 information of the WD, the identifier of the MME of the WD and the identifier of the MME S1 interface user equipment of the WD, which are stored in the first base station and correspond to the identifier of the WD.

Optionally, the first base station may update the identifier of the MME of WD stored in the first base station from the identifier of the second MME currently stored in the first base station to the identifier of the third MME.

In the embodiment of the present invention, when the MME of WD changes, the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station may be unavailable, and at this time, the first base station may update the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD, so that the first base station can still successfully forward the uplink signaling for WD.

S408, the first base station sends a response message of the second message to the first MME.

Optionally, after the first base station updates the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station according to the updated uplink S1 information of WD, the first base station sends a response message of the second message to the first MME.

S409, the first MME sends a response message of the tenth message to the third MME.

Optionally, after the first base station sends the response message of the second message to the first MME, the first MME sends the response message of the tenth message to the third MME.

S410, the third MME sends an uplink S1 path update complete message to the WD.

Optionally, after the first MME sends the response message of the tenth message to the third MME, the third MME sends an uplink S1 path update completion message to the WD, so as to respond to the uplink S1 path update notification message in S402, that is, the third MME instructs the WD to transmit uplink signaling using the indirect path.

In the method for accessing a network by UE according to the embodiment of the present invention, after WD switches from a direct path to an indirect path, when an MME of WD is changed from a current second MME to a third MME, an identifier of the MME of WD and an identifier of an MME S1 interface user equipment of WD stored in a first base station may not be used, and at this time, the third MME may update uplink S1 information of WD and send a tenth message to the first MME; after the first MME receives the tenth message, it may determine that the first base station and the third MME satisfy the network connection relationship according to the updated uplink S1 information of the WD carried in the tenth message, and send a second message to the first base station; and after the first base station receives the second message, updating the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station according to the updated uplink S1 information of WD carried in the second message. That is, in the embodiment of the present invention, when the MME of WD changes and the first base station and the third MME satisfy the network connection relationship, the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD stored in the first base station may be updated in time, so that when the MME of WD changes, the uplink signaling of WD may still be transmitted through the indirect path.

Second case of scenario 3:

an embodiment of the present invention provides a method for accessing a network through a UE, where when a serving cell of a WD changes and an SGW of the WD changes, as shown in fig. 10, the method may include the following steps:

s501, changing the serving cell of WD.

For the above description of S501, reference may be specifically made to the related description in S401, and details are not repeated here.

S502, the second MME sends an uplink S1 path update notification message to the WD.

The uplink S1 path update notification message is used to notify WD that the uplink path of WD needs to be updated, so that WD can transmit using the direct path of WD when WD needs to transmit uplink data after receiving the uplink path update notification message sent by the second MME.

S503, the second MME updates the uplink S1 information of WD.

S504, the second MME sends a tenth message to the first MME.

S505, the first MME receives the tenth message, and determines that the first base station and the SGW of the WD after the change satisfy the network connection relationship according to the updated uplink S1 information of the WD carried in the tenth message.

Optionally, after receiving the tenth message, the first MME acquires the updated uplink S1 information of the WD carried in the tenth message, and determines whether the first base station is connectable to the SGW of the WD after the change according to the SGW IP address of the WD in the updated uplink S1 information of the WD, and when the first MME determines that the first base station and the SGW of the WD after the change satisfy the network connection relationship, the first MME may determine that the first base station is connectable to the SGW of the WD after the change, that is, the first base station may transmit the received uplink data of the WD to the SGW of the WD after the change, so that the first MME may determine that the UE may continue to provide the relay service for the WD.

Optionally, when the first MME determines that the network connection relationship between the first base station and the SGW of the modified WD is not satisfied, the first MME may determine that the first base station cannot be connected to the SGW of the modified WD, that is, the first base station cannot transmit the received uplink data of the WD to the SGW of the modified WD, so that the first MME may determine that the UE cannot continue to provide the relay service for the WD.

Optionally, the first base station and the SGW of the WD after the change satisfy the network connection relationship may be understood as follows: data transmission may be performed between the first base station and the SGW of the WD after the change.

S506, the first MME sends a second message to the first base station.

The second message is used for requesting the first base station to update the first mapping relation.

And S507, the first base station receives the second message and updates the first mapping relation according to the second message.

Optionally, after receiving the second message sent by the first MME, the first base station acquires the updated uplink S1 information of the WD, which is carried in the second message, and updates the first mapping relationship corresponding to the identifier of the WD according to the updated uplink S1 information of the WD.

In the embodiment of the present invention, when the SGW of the WD is changed, the first mapping relationship established by the first base station may be unavailable, and at this time, the first base station may update the first mapping relationship, so that the first base station can still successfully forward the uplink data for the WD.

S508, the first base station sends a response message of the second message to the first MME.

Optionally, after the first base station updates the first mapping relationship according to the updated uplink S1 information of the WD, the first base station sends a response message of the second message to the first MME.

S509, the first MME sends a response message of the tenth message to the second MME.

Optionally, after the first base station sends the response message of the second message to the first MME, the first MME sends the response message of the tenth message to the second MME.

S510, the second MME sends an uplink S1 path update complete message to the WD.

Optionally, after the first MME sends the response message of the tenth message to the second MME, the second MME sends an uplink path update completion message to the WD.

Optionally, after the first MME sends the response message of the tenth message to the second MME, the second MME sends an uplink path update completion message to the WD, so as to respond to the uplink path update notification message in S502, that is, the second MME instructs the WD to transmit uplink data using the indirect path.

According to the method for accessing the network by the UE provided by the embodiment of the invention, after the WD is switched from the direct path to the indirect path, and under the condition that the SGW of the WD is changed, the first mapping relation established by the first base station may not be used, and at the moment, the second MME can update the uplink S1 information of the WD and send a tenth message to the first MME; after the first MME receives the tenth message, it may determine, according to the updated uplink S1 information of the WD carried in the tenth message, that the first base station and the SGW of the WD after the change satisfy the network connection relationship, and send a second message to the first base station; and after the first base station receives the second message, updating the first mapping relation according to the updated uplink S1 information of the WD carried in the second message. That is, in the embodiment of the present invention, when the SGW of the WD is changed and the first base station and the changed SGW of the WD satisfy the network connection relationship, the first mapping relationship may be updated in time, so that when the SGW of the WD is changed, the uplink data of the WD may still be transmitted through the indirect path.

Scene 4: changing a base station serving a UE from a first base station to a second base station

Optionally, after the WD is switched from the direct path to the indirect path, for example, when a serving cell of a UE providing a relay service for the WD is changed, a scenario may occur in which a base station providing a service for the UE is changed from a first base station to a second base station.

An embodiment of the present invention provides a method for accessing a network through a UE, where when a serving cell of the UE changes, a base station providing service for the UE is changed from a first base station to a second base station, as shown in fig. 11, the method may include the following steps:

s601, a procedure of changing a serving cell of the UE.

In scenario 1, after the first base station establishes the first mapping relationship, the first mapping relationship may be stored in the first base station. In the process of changing the serving cell of the UE, the first base station sends the context (including the first mapping relationship) of the UE in the first base station to the second base station.

S602, the second base station sends a path switching request message to the first MME.

The path switching request message is used for notifying the first MME that the base station providing service for the UE is changed from the first base station to the second base station.

S603, the first MME receives the path switching request message, and determines that the second base station and the SGW of the second MME or WD do not satisfy the network connection relation according to the context of the UE.

The first MME may determine, according to the identity of the UE carried in the tenth message, that the serving base station of the UE is changed from the first base station to the second base station.

Optionally, after receiving the path switching request message, the first MME acquires uplink S1 information of the WD from the context of the UE (all uplink S1 information of the WD accessing the network through the UE is stored in the context information of the UE), and determines whether the second base station is connectable to the SGW of the second MME or WD according to the identifier of the second MME in the uplink S1 information of the WD and the IP address of the SGW of the WD, and when the first MME determines that the network connection relationship between the second base station and the SGW of the second MME or WD is not satisfied, the first MME may determine that the second base station is not connectable to the SGW of the second MME or WD, that is, the second base station is not capable of transmitting the received uplink signaling of the WD to the second MME, or the second base station is not capable of transmitting the received uplink data of the WD to the SGW, so that the first MME may determine that the UE is not capable of providing the relay service for continuing the WD.

Optionally, when the first MME determines that the second base station and the SGWs of the second MME and the WD both satisfy the network connection relationship, the first MME may determine that the second base station may be connected to the SGWs of the second MME and the WD, that is, the second base station may transmit the received uplink signaling of the WD to the second MME, and the second base station may transmit the received uplink data of the WD to the SGW of the WD, so that the first MME may determine that the UE may continue to provide the relay service for the WD.

Optionally, if the network connection relationship between the second base station and the SGW of the second MME or WD is not satisfied, it may be understood that: signaling transmission cannot be performed between the second base station and the second MME, or data transmission cannot be performed between the second base station and the SGW of the WD.

S604, the first MME sends a path switching response message to the second base station.

Optionally, in a case where the first MME determines that the UE cannot provide the relay service for the WD (i.e., the WD cannot access the network through the UE), the first MME may send, to the second base station, an indication message for the first MME to indicate to the second base station that the WD cannot access the network through the UE. The indication message may be the path switching response message in S604, or may be another S1 interface application protocol message.

Optionally, the identifier of the WD may be carried in the path switching response message.

S605, the second base station receives the path switching response message and deletes the first mapping relation.

Optionally, after the second base station receives the path switching response message, it is known that the UE cannot continue to provide the relay service for the WD, and in order to save the storage space of the second base station, the identifier of the WD carried in the path switching response message may be obtained, and the first mapping relationship corresponding to the identifier of the WD is deleted from the second base station.

In the embodiment of the present invention, when the base station serving the UE is changed from the first base station to the second base station, the first base station sends the context of the UE in the first base station (including the first mapping relationship) to the second base station.

Optionally, after the UE cannot continue to provide the relay service for the WD, in order to save storage resources of the second base station and improve the utilization rate of network resources, the second base station may delete the identifier of the MME of the WD and the identifier of the MME S1 interface user equipment of the WD, which are stored in the second base station and correspond to the identifier of the WD.

Optionally, when the path switching response message is used to indicate to the second base station that the UE cannot provide the relay service for the multiple WDs, the path switching response message may carry the identifiers of the multiple WDs, and after receiving the path switching response message, the second base station obtains the identifiers of the multiple WDs carried in the path switching response message and deletes the first mapping relationship corresponding to the identifier of each WD in the identifiers of the multiple WDs.

S606, the second base station sends RRC reconfiguration information to the UE.

Wherein the RRC reconfiguration message is used to notify the UE that the WD cannot continue to be provided with the relay service.

Optionally, the RRC reconfiguration message may carry an identifier of the WD.

S607, the UE receives the RRC reconfiguration message and deletes the mapping relationship between the UE and the WD.

Optionally, after the UE establishes the second mapping relationship in scenario 1, the UE may store the mapping relationship between the UE and the WD. When the serving cell of the UE is changed and the UE knows that it is not possible to continue providing the relay service for the WD after receiving the RRC reconfiguration message sent by the second base station, the UE may acquire the identifier of the WD carried in the RRC reconfiguration message and delete the mapping relationship between the UE and the WD.

Optionally, after the UE establishes the second mapping relationship in scenario 1, the UE may store the second mapping relationship, and may delete the second mapping relationship when the serving cell of the UE changes and the UE knows that the relay service cannot be continuously provided for the WD after receiving the RRC reconfiguration message sent by the second base station.

Optionally, when the RRC reconfiguration message is used to notify the UE that the UE cannot continue to provide services for the multiple WDs, the RRC reconfiguration message may carry the identifiers of the multiple WDs, and after receiving the RRC reconfiguration message, the UE may acquire the identifiers of the multiple WDs carried in the RRC reconfiguration message and delete the first mapping relationship corresponding to the identifier of each WD in the identifiers of the multiple WDs.

In the embodiment of the present invention, the second base station may notify the UE through the RRC reconfiguration message, and the UE cannot continue to provide the relay service for the WD, so that the UE may delete the mapping relationship between the UE and the WD after receiving the RRC reconfiguration message, thereby saving the storage resource of the UE, improving the utilization rate of the network resource, and the UE may also provide the relay service for other WDs.

S608, the UE sends a seventh message to the WD.

The seventh message is used to instruct the WD to switch the indirect path to the direct path, and for example, the seventh message may be a direct path switching instruction message, or may also be another PC5 interface message, which may be determined specifically according to actual usage requirements, which is not limited in the present invention.

S609, WD receives the seventh message.

After receiving the seventh message, the WD abandons the indirect path to transmit the upstream data and signaling and begins to transmit the upstream data and signaling using the direct path.

S610, WD sends a response message of the seventh message to the UE.

Optionally, after the WD receives the seventh message, the WD may send a response message to the seventh message to the UE.

Optionally, after the foregoing S602 and before the S603, in the embodiment of the present invention, the first MME may send a modify bearer request message to the SGW of the UE. The modify bearer request message is used to notify the SGW of the UE that the base station serving the UE has changed. The SGW of the UE may send a modify bearer response message to the first MME after receiving the modify bearer request message.

In the method for accessing a network through a UE according to the embodiment of the present invention, after the WD is switched from the direct path to the indirect path, when a base station serving the UE (UE providing relay service for WD) is changed from a first base station to a second base station, a path switching request message is sent to a first MME through the second base station, and after the first MME receives the path switching request message, it is determined according to the context of the UE that the network connection relationship between the second base station and a second MME or an SGW of the WD is not satisfied, the first MME sends a path switching response message to the second base station, and the second base station receives the path switching response message and deletes the first mapping relationship; and the second base station sends an RRC reconfiguration message to the UE, the UE receives the RRC reconfiguration message and informs that the UE cannot continue to provide the relay service for the WD, and the mapping relation between the UE and the WD is deleted. That is, in the embodiment of the present invention, after the base station providing service for the UE is changed from the first base station to the second base station, the UE cannot provide relay service for the WD, the first mapping relationship stored in the second base station and the mapping relationship between the UE and the WD stored in the UE may be deleted in time, so that the storage resources of the base station and the UE are saved, and the utilization rate of the network resources is improved.

It should be noted that, in the method for accessing a network by a UE according to the embodiment of the present invention, a base station providing service for a WD and a base station providing service for the UE (i.e., the first base station) may be the same base station or different base stations.

Optionally, when the base station providing service for WD and the base station providing service for UE are the same base station, when a serving cell of WD changes, the base station providing service for WD and the base station providing service for UE may become different base stations, which is specifically shown in the following case a; when the serving cell of the UE changes, the base station serving the WD and the base station serving the UE may also become different base stations, as shown in the following case b.

Case a: the base station serving the WD is changed.

Case b: the base station serving the UE is changed.

In view of the above situation a, by using the method of accessing to a network by a UE according to the embodiment of the present invention, when a WD accesses to the network by a UE, the WD is not related to a base station providing services to the WD, that is, no matter whether the base station providing services to the WD is changed, the method of accessing to the network by a UE according to the embodiment of the present invention can enable the WD to access to the network by the UE, that is, after the base station providing services to the WD is changed, the UE that provides services to the WD can still continue to provide services to the WD before the base station providing services to the WD is changed (that is, before the base station providing services to the WD is changed, that is, when the base station providing services to the WD and the base station providing services. Thus, the problem that the UE which has served the WD cannot continue to serve the WD before after the base station which serves the WD is changed in the conventional art can be avoided (in the conventional art, when the WD is accessed to the network through the UE, the base station which serves the WD and the base station which serves the UE are usually the same base station).

Optionally, when a base station serving the WD is changed, the MME of the WD may also be changed, and when the MME of the WD is changed, the method for accessing the network through the UE according to the embodiment of the present invention may have two possibilities. One possibility is that a UE that previously provided relay service to the WD (i.e., before the MME of the WD changed) may still continue to provide relay service to the WD; another possibility is that a UE that previously provided relay service to the WD (i.e., before the MME of the WD changed) cannot continue to provide relay service to the WD. Specifically, the two possible descriptions may refer to the related descriptions in the first case of scenario 3 in the above embodiment, and are not described again here.

Optionally, when a base station serving the WD is changed, an SGW of the WD may be changed, and when the SGW of the WD is changed, there may be two possibilities for the method for accessing the network through the UE according to the embodiment of the present invention. One possibility is that a UE that previously provided relay service to the WD (i.e., before the SGW of the WD changed) may still continue to provide relay service to the WD; another possibility is that a UE that previously provided relay service to the WD (i.e., before the SGW of the WD changed) cannot continue to provide relay service to the WD. Specifically, the two possible descriptions may refer to the related descriptions in the second case of scenario 3 in the above embodiment, and are not described again here.

For the case b: when a base station providing service for the UE changes, the method for accessing the network through the UE according to the embodiment of the present invention may have two possibilities: one possibility is that the UE may still continue to provide relay service for the WD; another possibility is that the UE cannot continue to provide relay service for the WD. Specifically, the two possible descriptions may refer to the related descriptions in the scenario 4 in the above embodiment, and are not described herein again.

In the embodiment of the present invention, the base station, the UE, the MME, the WD, and the like may be divided into functional modules according to the method embodiment, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

For example, in a case that each functional module is divided according to each function, a schematic structural diagram of a base station (i.e., a first base station in the embodiment of the present invention) provided in the embodiment of the present invention is shown in fig. 12, where in fig. 12, the first base station includes: a receiving module 41, an assigning module 42, a creating module 43, a saving module 44, an updating module 45, a deleting module 46 and a sending module 47.

The receiving module 41 and the allocating module 42 are configured to support the first base station to execute S108 in the foregoing method embodiment, the receiving module 41 and the deleting module 46 are configured to support the first base station to execute S305 in the foregoing method embodiment, and the receiving module 41 and the updating module 45 are configured to support the first base station to execute S407 and S507 in the foregoing method embodiment.

The establishing module 43 is configured to support the first base station to execute S109 in the foregoing method embodiment.

A storage module 44, configured to support the first base station to store the identifier of the second MME and the MME UE S1-AP ID of WD, which are stored in the first base station in S116 in the foregoing method embodiment.

A sending module 47, configured to support the first base station to perform S110, S306, S408, and S508 in the foregoing method embodiment.

The receiving module 41, the assigning module 42, the establishing module 43, the saving module 44, the updating module 45, the deleting module 46, and the sending module 47 described above may also be used to perform other processes of the techniques described herein.

Optionally, the first base station provided in the embodiment of the present invention further includes other functional modules for supporting the first base station to execute other method steps in the foregoing method embodiments, for example: the first base station further comprises a functional module for executing S601 in the above method embodiment.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

For example, in the case of using an integrated unit, a schematic structural diagram of a first base station provided in an embodiment of the present invention is shown in fig. 13. In fig. 13, the first base station includes: a processing module 401 and a communication module 402. The processing module 401 is configured to control and manage the actions of the first base station, for example, perform the steps performed by the allocation module 42, the establishment module 43, the update module 45, and the deletion module 46, and/or perform other processes for performing the techniques described herein. The communication module 402 is configured to support interaction between the first base station and other devices, for example, perform the steps performed by the receiving module 41 and the sending module 47. As shown in fig. 13, the first base station may further include a storage module 403 and a bus 404, where the storage module 403 is used to store program codes and data of the first base station, for example, store the contents stored by the above-mentioned storage module 44.

The processing module 401 may be a processor or a controller in the first base station, which may be a baseband processing unit in the base station shown in fig. 4, and may implement or execute various exemplary logic blocks, modules and circuits described in connection with the disclosure of the present invention. The processor or controller may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic, hardware components, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The communication module 402 may be a transceiver, a transceiver circuit, a communication interface, etc. in the first base station, which may be an antenna in the base station as shown in fig. 4 described above.

The storage module 403 may be a memory in the first base station, etc. The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

The bus 404 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 404 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.

An embodiment of the present invention further provides a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include computer-executable instructions, and when a processor or a controller in the first base station executes the computer-executable instructions, the first base station executes each step performed by the first base station in the method flow shown in the foregoing method embodiment.

Exemplarily, in a case that each function module is divided according to each function, a schematic structural diagram of the UE provided in the embodiment of the present invention is shown in fig. 14, where in fig. 14, the UE includes: a receiving module 51, a sending module 52 and a building module 53.

Wherein, the receiving module 51 and the establishing module 53 are configured to support the UE to perform S111 and S112 in the foregoing method embodiment, and the receiving module and the deleting module 55 are configured to support to perform S607 in the foregoing method embodiment.

A sending module 52, configured to support the UE to perform S204, S216, S304, and S608 in the foregoing method embodiments.

The receiving module 51, the sending module 52, and the establishing module 53 described above may also be used to perform other processes of the techniques described herein.

Optionally, the UE provided in the embodiment of the present invention further includes other functional modules for supporting the UE to execute other method steps in the foregoing method embodiments, for example: the UE further comprises functional modules for performing S101, S112, S303 and S601 in the above-described method embodiments.

For example, in the case of using an integrated unit, a schematic structural diagram of a UE provided in an embodiment of the present invention is shown in fig. 15. In fig. 15, the UE includes: a processing module 501 and a communication module 502. The processing module 501 is used for controlling and managing actions of the UE, for example, performing the steps performed by the establishing module 53 described above, and/or other processes for performing the techniques described herein. The communication module 502 is used to support interaction between the UE and other devices, for example, to execute the steps executed by the receiving module 51 and the sending module 52. The UE may also include a memory module 503 and a bus 504, the memory module 503 being used to store program codes and data for the UE.

The processing module 501 may be a processor or a controller in the UE, which may be the processor 11 in the handset as shown in fig. 2, and which may implement or execute various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The communication module 502 may be a transceiver, transceiver circuit, or communication interface, etc. in the UE, which may be the RF circuit in the handset as shown in fig. 2.

The storage module 503 may be a memory in the UE, etc., which may be the memory 14 in the handset as shown in fig. 2. The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.

The bus 504 may be an EISA bus or the like. The bus 504 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 15, but this is not intended to represent only one bus or type of bus.

An embodiment of the present invention further provides a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include computer-executable instructions, and when a processor in the UE executes the computer-executable instructions, the UE executes each step performed by the UE in the method flow shown in the foregoing method embodiment.

For example, in the case of adopting each functional module divided according to each function, a schematic structural diagram of the first MME provided in the embodiment of the present invention is shown in fig. 16. In fig. 16, the first MME includes: a receiving module 61, a determining module 62 and a sending module 63.

The receiving module 61 is configured to support the first MME to execute S113 in the foregoing method embodiment.

A receiving module 61 and a determining module 62, configured to support the first MME to perform S106, S405, S505, and S603 in the foregoing method embodiment.

A sending module 63, configured to support the first MME to perform S107, S114, S206, S107, S114, S215, S308, S406, S506, and S604 in the foregoing method embodiment.

The receiving module 61, determining module 62, and transmitting module 63 described above may also be used to perform other processes for the techniques described herein.

Optionally, the first MME provided in the embodiment of the present invention further includes other functional modules for supporting the first MME to execute other method steps in the foregoing method embodiments, for example: the first MME further includes a functional module for executing S601 in the above method embodiment.

For example, in the case of using an integrated unit, a schematic structural diagram of a first MME provided in an embodiment of the present invention is shown in fig. 17. In fig. 17, the first MME includes: a processing module 601 and a communication module 602. The processing module 601 is used to control and manage the actions of the first MME, e.g., to perform the steps performed by the determination module 62 described above, and/or to perform other processes for the techniques described herein. The communication module 602 is configured to support interaction between the UE and other devices, for example, perform the steps performed by the receiving module 61 and the sending module 63. The first MME may also include a memory module 603 and a bus 604, the memory module 603 being used to store program codes and data for the first MME.

The processing module 601 may be a processor or a controller in the first MME, and the processor or the controller may be the processor 31 integrated in the server shown in fig. 5, and the processor or the controller may implement or execute various exemplary logic blocks, modules and circuits described in connection with the present disclosure. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The communication module 602 may be a transceiver, a transceiver circuit, a communication interface, or the like in the first MME, and the transceiver, the transceiver circuit, the communication interface, or the like may be the I/O interface 33 integrated in the server shown in fig. 5.

The storage module 603 may be a memory in the first MME, and the memory may be the memory 32 integrated in the server shown in fig. 5. The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.

The bus 604 may be an EISA bus or the like in the first MME. The bus 604 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is used in FIG. 17, but it is not intended that there be only one bus or one type of bus.

An embodiment of the present invention further provides a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include computer-executable instructions, and when the processor in the first MME executes the computer-executable instructions, the first MME executes each step executed by the first MME in the method flow shown in the foregoing method embodiment.

For example, in the case of adopting each functional module divided according to each function, a schematic structural diagram of the second MME provided in the embodiment of the present invention is shown in fig. 18. In fig. 18, the second MME includes: an acquisition module 71 and a sending module 72.

An obtaining module 71, configured to support the second MME to execute S104 in the foregoing method embodiment.

A sending module 72, configured to support the second MME to perform S105, S115, S105, S504, and S509 in the foregoing method embodiment.

Optionally, with reference to fig. 18, as shown in fig. 19, the second MME provided in the embodiment of the present invention further includes a receiving module 73 and a determining module 74.

Wherein, the receiving module 73 and the determining module 74 are configured to support the second MME to execute S103 in the foregoing method embodiment.

Optionally, with reference to fig. 18, as shown in fig. 20, the second MME further includes a receiving module 73 according to the embodiment of the present invention.

A receiving module 73, configured to support the second MME to perform S207 in the foregoing method embodiment.

The above-described acquisition module 71, sending module 72, receiving module 73, and determining module 74 may also be used to perform other processes for the techniques described herein.

Optionally, the second MME provided in the embodiment of the present invention further includes other functional modules for supporting the second MME to execute other method steps in the foregoing method embodiments, for example: the second MME further comprises functional modules for performing S401 and S501 in the above method embodiments.

For example, in the case of using an integrated unit, a schematic structural diagram of a second MME provided in the embodiment of the present invention is shown in fig. 21. In fig. 21, the second MME includes: a processing module 701 and a communication module 702. Processing module 701 is configured to control and manage actions of the second MME, for example, to perform the steps performed by acquisition module 71 and determination module 74 described above, and/or to perform other processes for the techniques described herein. The communication module 702 is used to support interaction between the UE and other devices, for example, to perform the steps performed by the sending module 72 and the receiving module 73. The second MME may also include a memory module 703 and a bus 704, the memory module 703 being used to store program codes and data for the second MME.

The processing module 701 may be a processor or a controller in the second MME, and the processor or the controller may be the processor 31 integrated in the server shown in fig. 5, and the processor or the controller may implement or execute various exemplary logic blocks, modules and circuits described in connection with the disclosure of the present invention. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The communication module 702 may be a transceiver, a transceiver circuit, a communication interface, or the like in the second MME, and the transceiver, the transceiver circuit, the communication interface, or the like may be the I/O interface 33 integrated in the server shown in fig. 5.

The storage module 703 may be a memory in the second MME, which may be the memory 32 integrated in the server shown in fig. 5. The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.

The bus 704 may be an EISA bus in the second MME, or the like. The bus 704 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is used in FIG. 21, but it is not intended that there be only one bus or one type of bus.

An embodiment of the present invention further provides a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include instructions, and when the processor in the second MME executes the instructions, the second MME executes the steps performed by the second MME in the method flow shown in the foregoing method embodiment.

Exemplarily, in the case of dividing each functional module by corresponding functions, a schematic diagram of the WD provided by the embodiment of the present invention is shown in fig. 22. In fig. 22, the WD includes: a transmitting module 81 and a receiving module 82.

Wherein the sending module 81 is configured to support the WD to execute S102, S202, and S610 in the above method embodiment.

The receiving module 82 is configured to support the WD to execute S609 in the above method embodiment.

The above-described transmitting module 81 and receiving module 82 may also be used to perform other processes for the techniques described herein.

Optionally, the WD provided in this embodiment of the present invention further includes other functional modules for supporting the WD to perform other method steps in the foregoing method embodiments, for example: WD further comprises functional modules for performing S101, S112, S301, S401 and S501 in the above-described method embodiments.

Exemplarily, in case of employing an integrated unit, a schematic diagram of a structure of WD provided by the embodiment of the present invention is shown in fig. 23. In fig. 23, WD includes: a processing module 801 and a communication module 802. The processing module 801 is configured to control and manage the WD. The communication module 802 is used to support interaction between the UE and other devices, for example, to perform the steps performed by the transmitting module 81 and the receiving module 82. WD may also include a memory module 803 and a bus 804, memory module 803 being used to store program code and data for WD.

The processing module 801 may be a processor or controller in WD, the processor may be the processor 21 in the smart watch shown in fig. 3, and the processor or controller may implement or execute various exemplary logic blocks, modules and circuits described in connection with the present disclosure. The processor or controller may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The communication module 802 may be a transceiver, a transceiver circuit, a communication interface, etc. in the WD, and the transceiver, the transceiver circuit, the communication interface, etc. may be the RF circuit 22 in the smart watch shown in fig. 3.

The storage module 803 may be a memory in WD, or the like, which may be the memory 24 in the smart watch as shown in fig. 3. The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.

The bus 804 may be an EISA bus in WD, or the like. The bus 804 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is used in FIG. 23, but it is not intended that there be only one bus or one type of bus.

Embodiments of the present invention also provide a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, where the one or more programs include computer-executable instructions, and when the computer-executable instructions are executed by a processor in the WD, the WD performs the steps performed by the WD in the method flow shown in the method embodiments.

An embodiment of the present invention provides a wireless communication system, which may include a base station (i.e., the first base station according to the above-described embodiment) that provides a service to a UE, the UE, an MME of the UE (i.e., the first MME according to the above-described embodiment), and MMEs of WD and WD (i.e., the second MME according to the above-described embodiment). The network architecture of the wireless communication system provided by the embodiment of the present invention may specifically refer to the schematic diagram of the network architecture of the EPS shown in fig. 1. The first base station may be the base station 1 shown in fig. 1; the UE may be the UE shown in fig. 1; the first MME may be the MME1 shown in fig. 1; the second MME may be the MME2 shown in fig. 1; the WD may be a WD as shown in fig. 1. For the description of the first base station, the UE, the first MME, the second MME, and the WD, reference may be specifically made to the related description in the foregoing method embodiment and apparatus embodiment, and details are not repeated here.

In the wireless communication system provided by the embodiment of the present invention, the first MME (i.e. MME of UE) may send, to the first base station (i.e. base station providing service to UE), a first message requesting WD to access the network through UE, so that the first base station allocates a PDCP identifier to WD according to the first message, and establishes a mapping relationship between a DRB between the UE and the first base station and an S1 bearer between the first base station and an SGW of WD according to uplink S1 information of WD and the PDCP identifier carried in the first message, so that WD may access the network through UE, and WD may forward uplink data of WD to the first base station through UE, and the first base station sends the uplink data to the SGW of WD, so that SWG of WD forwards the uplink data again, that is, the uplink data of WD may be forwarded to the SGW through UE and the first base station WD. Compared with the prior art in which the WD is in direct communication with a base station for providing service for the WD, the WD and the UE are in a short distance in normal conditions, so that the WD needs less transmission power when transmitting uplink data through the UE, the WD consumes less power, and the WD standby time can be prolonged.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, Erasable Programmable Read Only Memory (EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM), registers, a hard disk, a removable hard disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for accessing a network by a user equipment, comprising:

a first base station receives a first message sent by a first Mobility Management Entity (MME), wherein the first message carries uplink S1 information of a Wearable Device (WD), the first message is used for the first Mobility Management Entity (MME) to request the WD to access a network through User Equipment (UE) from the first base station, the first base station provides service for the UE, and the first Mobility Management Entity (MME) is the MME of the UE;

the first base station allocates a Packet Data Convergence Protocol (PDCP) identifier to the WD according to the first message, wherein the PDCP identifier is used for identifying uplink data to be transmitted as the data of the WD;

the first base station establishes a first mapping relation according to the uplink S1 information and the PDCP identifier, wherein the first mapping relation is a mapping relation between a Data Radio Bearer (DRB) between the UE and the first base station and an S1 bearer between the first base station and a Serving Gateway (SGW) of the WD;

the establishing of the first mapping relationship specifically includes: the first base station acquires a first S1 interface tunnel endpoint identifier and a first QoS value corresponding to a first EPS bearer identifier according to the uplink S1 information, wherein the first EPS bearer identifier is one of a plurality of EPS bearer identifiers;

the first base station determines the identification of the first DRB corresponding to the first QoS value according to the corresponding relation between the identification of the DRB and the QoS value;

and the first base station establishes the first mapping relation according to the identifier of the first DRB, the PDCP identifier, the IP address of the SGW and the identifier of the tunnel endpoint of the first S1 interface.

2. The method of claim 1,

the uplink S1 information includes: an identity of an MME of the WD, an MME S1 interface user equipment identity of the WD, a plurality of Evolved Packet System (EPS) bearer identities of the WD, and an Internet Protocol (IP) address, an S1 interface tunnel endpoint identity, and a quality of service (QoS) value of an SGW corresponding to each EPS bearer identity.

3. The method of claim 2, wherein after the first base station receives the first message sent by the first Mobility Management Entity (MME), the method further comprises:

the first base station stores the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD in the first message, and the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD are used for sending uplink signaling of WD.

4. The method according to claim 1 or 2, wherein the MME of WD is changed from a current second MME to a third MME or the SGW of WD is changed,

after the first base station establishes the first mapping relationship, the method further includes:

the first base station receives a second message sent by the first Mobility Management Entity (MME), wherein the second message is used for updating the identifier of the MME of the WD and the identifier of the MME S1 interface user equipment of the WD when the MME of the WD is changed from the current second MME to a third MME, or the second message is used for requesting the first base station to update the first mapping relation when the SGW of the WD is changed;

and the first base station updates the identifier of the MME of the WD and the identifier of the MME S1 interface user equipment of the WD or updates the first mapping relation according to the second message.

5. The method according to claim 1 or 2, wherein after the first base station establishes the first mapping relationship, the method further comprises:

the first base station receives a third message sent by the UE, wherein the third message is used for requesting the first base station to delete the first mapping relation;

and the first base station deletes the first mapping relation according to the third message.

6. The method of claim 1 or 2, wherein the base station serving the UE is changed from the first base station to a second base station, the method further comprising:

and the second base station deletes the first mapping relation stored in the second base station.

7. The method according to claim 1 or 2, wherein after the first base station establishes the first mapping relationship, the method further comprises:

the first base station sends a fourth message to the UE, where the fourth message is used to instruct the UE to establish a second mapping relationship, and the second mapping relationship is a mapping relationship between a PC5 bearer between the WD and the UE and a DRB between the UE and the first base station.

8. A base station, wherein the base station is a first base station, the base station comprising:

a receiving module, configured to receive a first message sent by a first mobility management entity MME, where the first message carries uplink S1 information of a wearable device WD, and the first message is used for the first mobility management entity MME to request, to a first base station, that the WD accesses a network through a user equipment UE, where the first base station provides a service for the UE, and the first mobility management entity MME is an MME of the UE;

the distribution module is configured to distribute a Packet Data Convergence Protocol (PDCP) identifier to the WD according to the first message received by the receiving module, where the PDCP identifier is used to identify uplink data to be transmitted as data of the WD;

an establishing module, configured to establish a first mapping relationship according to the uplink S1 information received by the receiving module and the PDCP identifier allocated to the WD by the allocating module, where the first mapping relationship is a mapping relationship between a data radio bearer DRB between the UE and the first base station and an S1 bearer between the first base station and a serving gateway SGW of the WD;

the establishing module is specifically configured to obtain, according to the uplink S1 information, a first S1 interface tunnel endpoint identifier and a first QoS value corresponding to a first EPS bearer identifier, where the first EPS bearer identifier is one of multiple EPS bearer identifiers; determining the identifier of a first DRB corresponding to the first QoS value according to the corresponding relation between the identifier of the DRB and the QoS value; and establishing the first mapping relation according to the identifier of the first DRB, the PDCP identifier, the IP address of the SGW and the identifier of the tunnel endpoint of the first S1 interface.

9. The base station of claim 8,

10. The base station of claim 9, wherein the base station further comprises a saving module,

the storing module is configured to store the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD in the first message received by the receiving module, and the identifier of the MME of WD and the identifier of the MME S1 interface user equipment of WD are used to send uplink signaling of WD.

11. Base station according to claim 8 or 9, characterized in that the MME of WD is changed from the current second MME to a third MME or the SGW of WD is changed, the base station further comprises an update module,

the receiving module is further configured to receive, after the establishing module establishes the first mapping relationship, a second message sent by the first mobility management entity MME, where the second message is used to update an identifier of an MME of the WD and an identifier of an MME S1 interface user equipment of the WD when the MME of the WD is changed from a current second MME to a third MME, or the second message is used to request the first base station to update the first mapping relationship when the SGW of the WD is changed;

the updating module is configured to update an identifier of an MME of the WD and an identifier of an MME S1 interface user equipment of the WD, or update the first mapping relationship, according to the second message received by the receiving module.

12. The base station of claim 10, further comprising a deletion module,

the receiving module is further configured to receive a third message sent by the UE after the establishing module establishes the first mapping relationship, where the third message is used to request the first base station to delete the first mapping relationship;

the deleting module is configured to delete the first mapping relationship according to the third message received by the receiving module.

13. The base station according to any of claims 8 to 10, wherein the base station further comprises a transmitting module,

the sending module is configured to send a fourth message to the UE after the establishing module establishes the first mapping relationship, where the fourth message is used to instruct the UE to establish a second mapping relationship, and the second mapping relationship is a mapping relationship between a PC5 bearer between the WD and the UE and a DRB between the UE and the first base station.

14. A base station comprising a processor, a transceiver, and a memory;

the memory is used for storing computer-executable instructions, and when the base station runs, the processor executes the computer-executable instructions stored in the memory, so as to enable the base station to execute the method for accessing the network through the user equipment according to any one of claims 1 to 7.

15. A wireless communication system, comprising: a base station as claimed in any one of claims 8 to 13.