CN109874156B - Distribution method of tracking area list and network equipment - Google Patents
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Abstract
The application discloses a distribution method of a tracking area list and network equipment, relates to the technical field of wireless networks, and can reduce signaling interaction between UE and a wireless network when the UE moves in a coverage area of the same tracking area list, and save wireless network resources. The method comprises the following steps: in the process of attaching a User Equipment (UE) to a network, the network equipment allocates a first tracking area list to the UE, wherein the first tracking area list comprises at least two first tracking areas, and the at least two first tracking areas have the same Circuit Switched Fallback (CSFB) support capability; if the at least two first tracking areas support CSFB, the network equipment indicates the UE to be attached to a first standard network; and if the at least two first tracking areas do not support CSFB, the network equipment indicates the UE to be attached to a second-system network. The scheme provided by the application is suitable for being adopted when the tracking area list is distributed to the UE.
Description
Technical Field
The present application relates to the field of wireless network technologies, and in particular, to a method for allocating a tracking area list and a network device.
Background
Currently, in a wireless network including a Long Term Evolution (LTE) network, a 3rd Generation Mobile Communication (3G) network and/or a 2nd Generation Mobile Communication (2G) network, a Mobility Management Entity (MME) allocates a Tracking Area List (TAL) including a plurality of tracking areas (task areas, TAs) to a User Equipment (UE) according to a moving track of The UE. Since the UE has an uncertainty in the moving trajectory, in the tracking area list, there is likely to be both a tracking area supporting Circuit Switched FallBack (CSFB) and a tracking area not supporting CSFB.
For example, in a hot spot area as shown in fig. 1, the coverage area of the tracking area is typically small. When the tracking Area list allocated to the UE11 includes both the tracking Area 12 supporting CSFB and the tracking Area 13 not supporting CSFB, and the two types of tracking areas are alternately distributed, the UE11 needs to cross the boundary between the tracking Area 12 supporting CSFB and the tracking Area 13 not supporting CSFB many times during the movement of the hot spot Area along the movement track 15, and therefore needs to frequently initiate procedures such as attach (attach) and Tracking Area Update (TAU) to the wireless network to Update its location, which results in more signaling interaction between the UE11 and the wireless network when moving within the coverage Area of the same tracking Area list, and occupies more network resources.
Disclosure of Invention
The application provides a method for distributing a tracking area list and network equipment, which are used for reducing signaling interaction between UE and a wireless network when the UE moves in a coverage area of the same tracking area list and saving wireless network resources.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a method for allocating a tracking area list, including: in the process that User Equipment (UE) is attached to a network, the network equipment allocates a first tracking area list to the UE, the first tracking area list comprises at least two first tracking areas, and the at least two first tracking areas have the same Circuit Switched Fallback (CSFB) support capability. And if the at least two first tracking areas support CSFB, the network equipment indicates the UE to be attached to the first-system network, and if the at least two first tracking areas do not support CSFB, the network equipment indicates the UE to be attached to the second-system network.
In a second aspect, an embodiment of the present application provides a network device, including: the processor is configured to allocate a first tracking area list to the UE in a process of attaching the UE to the network, where the first tracking area list includes at least two first tracking areas, and the at least two first tracking areas have the same CSFB support capability. A communication interface, configured to instruct the UE to attach to the first-system network if the at least two first tracking areas both support CSFB. And the communication interface is further used for indicating the UE to be attached to the second-system network if at least two first tracking areas do not support CSFB.
In a third aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when loaded onto a computer and executed by the computer, causes the computer to execute the method according to the first aspect.
According to the method for allocating the tracking area list and the network device provided by the embodiment of the application, in the process of attaching the UE to the network, the network device allocates the tracking area list to the UE, all tracking areas included in the allocated tracking area list have the same CSFB supporting capability, and then the UE is indicated to be attached to the first standard network or the second standard network according to the CSFB supporting capability of all tracking areas in the tracking area list. Therefore, because the tracking areas in the tracking area list have the same CSFB support capability, when the UE moves across the tracking areas in the coverage area of the tracking area list, the UE does not need to frequently initiate the procedures of attachment, tracking area update and the like to the wireless network to update the position information of the UE, the signaling interaction between the UE and the wireless network can be reduced, and the wireless network resources are further saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic view of a tracking area distribution scene of a hot spot area provided in the prior art;
fig. 2A is a schematic view of a scenario in which a UE is attached to a network of a first standard according to an embodiment of the present application;
fig. 2B is a schematic view of a scenario that a UE is attached to a network of a second standard according to an embodiment of the present application;
fig. 2C is a schematic diagram illustrating a method for dividing a tracking area according to an embodiment of the present disclosure;
fig. 2D is a schematic diagram of another tracking area dividing method provided in this embodiment of the present application;
fig. 3 is a flowchart of a method for allocating a tracking area list according to an embodiment of the present application;
fig. 4 is a flowchart of another tracking area list allocation method according to an embodiment of the present application;
fig. 5 is a flowchart of another tracking area list allocation method according to an embodiment of the present application;
fig. 6 is a flowchart of another tracking area list allocation method according to an embodiment of the present application;
fig. 6A is a schematic view of a scenario that a UE moves from a coverage area of a first tracking area list to a coverage area of a second tracking area list according to an embodiment of the present application;
fig. 6B is a schematic view of another scenario in which the UE moves from the coverage area of the first tracking area list to the coverage area of the second tracking area list according to the embodiment of the present application;
fig. 7 is a schematic structural diagram of an apparatus for allocating a tracking area list according to an embodiment of the present application;
fig. 7A is a schematic structural diagram of another tracking area list allocation apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
With The continuous development of mobile communication technology and mobile bandwidth service, LTE networks and fifth Generation mobile communication technology (5G) networks capable of providing higher-rate data service for users have been developed. Such high-speed networks focus on providing data services to users and, therefore, do not support voice services at the beginning of network deployment. Furthermore, in the process of gradual deployment of the LTE network or the 5G network, the coexistence of the conventional 2G, 3G network and the LTE network or the 5G network may be extended for a long time.
As shown in fig. 2A and 2B, the embodiment of the present application is applicable to a wireless network 20. The wireless network 20 includes a first-standard network 21 and a second-standard network 22. The first-standard network 21 supports a Packet Switched (PS) domain, but does not support a Circuit Switched (CS) domain, that is, cannot process a voice service through the CS domain. For example, the first-system network 21 is an LTE network deployed in an early stage and not capable of supporting volte (voice over LTE) service. The second standard network 22 supports a CS domain, and can process a voice service through the CS domain, and may also support a data service of a PS domain. For example, the second standard network 22 may be a 3G network or a 2G network.
The user equipment UE26 may access the first-standard network 21 or the second-standard network 22 through an access network device (e.g., a base station). In practice, the UE26 may be located within the common coverage area of different base stations. According to whether the coverage area of the base station of the first-standard network 21 is overlapped with the coverage area of the base station of the second-standard network 22, the coverage area of the base station can be divided into different tracking areas.
For example, as shown in fig. 2C, assuming that the base station 27 is a base station supporting a first standard and the base station 28 is a base station supporting a second standard, a common coverage area 29 of the two base stations may be divided into a tracking area. For another example, as shown in fig. 2D, assuming that the base station 27 may support both the first standard and the second standard, that is, the first standard and the second standard are deployed in a co-located manner, the entire coverage area of the base station 27 may be divided into one tracking area.
The UE can support both a first system network and a second system network. Illustratively, the UE may be any one of a Mobile phone, a wearable device, an Augmented Reality (AR)/Virtual Reality (VR) device, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, and a Personal Digital Assistant (PDA).
As shown in fig. 3, the embodiment of the present application provides a method for allocating a tracking area list, which can be applied to the wireless network 20 shown in fig. 2. The method comprises the following steps:
301. in the process of attaching the UE to the network, the network equipment allocates a first tracking area list for the UE.
The first tracking area list comprises at least two first tracking areas, and the at least two first tracking areas have the same circuit switched fallback CSFB support capability.
Specifically, the network device is a core network device, for example, the network device may be an MME in a network of a first standard, and may also be another network device that can allocate a tracking area list to a UE, which is not limited in this embodiment of the present application.
Optionally, as shown in fig. 4, in the process of attaching the UE to the network, an attach request is sent to the network device, and specifically, the method may be executed as steps 401 to 403:
401. the network equipment receives an attach request sent by the UE.
The attach request is used for requesting the network equipment to allocate a tracking area list to the UE, and the attach request carries an identifier of a tracking area where the UE is currently located.
In an embodiment, the network device receives an attach request sent by the UE, which may be an initial attach request sent to a wireless network in a process that the network device receives an initial attach procedure initiated when the UE is powered on.
In another embodiment, the network device receives the attach request sent by the UE, and may also be an attach request sent to the wireless network in the process of requesting access to the wireless network again after the UE loses network.
Since the above two attachment procedures are prior art, they are not described herein again.
The attach request carries an identifier of a tracking area where the UE is located, where the identifier may be an identifier of a base station of a first-standard network whose coverage includes the tracking area, and may be, for example, at least one of a device code, an Internet Protocol (IP) address, and a Media Access Control (MAC) address of the base station.
402. And the network equipment acquires the CSFB supporting capability of the tracking area where the UE is currently located according to the identification of the tracking area where the UE is currently located.
In practical applications, the network device usually stores the correspondence between the identities of all tracking areas under its control and its corresponding CSFB support capability. Therefore, the network device may query the CSFB support capability of the tracking area according to the identification of the tracking area.
403. The network equipment allocates a first tracking area list to the UE.
The first tracking area list comprises a tracking area where the UE is currently located, and all first tracking areas in the first tracking area list have the same CSFB support capability as the current tracking area where the UE is located.
Specifically, the tracking area list allocated by the network device for the UE includes a tracking area where the UE is currently located and at least one tracking area where the CSFB support capability is the same as that of the tracking area where the UE is currently located. Therefore, all tracking areas included in the tracking area list obtained by the UE have the same CSFB support capability, that is, all tracking areas included in the list support CSFB or do not support CSFB.
For convenience of description, the embodiment of the present application describes the tracking area list as a first tracking area list, and the tracking areas included in the tracking area list as the first tracking area. For example, as shown in fig. 2, at least two first tracking areas in the first tracking area list having the same CSFB support capability may be coverage areas including two base stations 23 and 24, or may be coverage areas of at least two base stations 25.
If the at least two first tracking areas both support CSFB, step 302 is performed. If neither of the at least two first tracking areas supports CSFB, step 303 is performed.
302. The network equipment indicates that the UE is attached to the first-system network.
In practical application, the data service processing capacity of the first-standard network is often higher than that of the second-standard network. Therefore, the network device indicates the UE to reside in the first-standard network, so that the UE can more quickly process data services such as internet access, file downloading, file uploading and the like carried in the PS domain, thereby improving the efficiency of the network device in processing the data services.
Based on the above consideration, exemplarily, as shown in fig. 2, when the first tracking area list allocated by the network device for the UE includes at least the coverage areas of the base stations 23 and 24, the network device instructs the UE to preferentially attach to the first-standard network 21 supporting the PS domain data service, so that the user preferentially receives the PS domain data service.
Alternatively, as shown in fig. 5, in the case that the UE is already attached to the network of the first system, when the UE has voice service, step 501 may be performed:
501. when the UE has the voice service, the network equipment indicates the UE to fall back from the first system network to the second system network to process the voice service.
Illustratively, as shown in fig. 2A, the UE26 is attached to the first-standard network 21, that is, the serving base station of the UE26 is the base station 23, the connection between the base station 23 and the first-standard network 21 is a solid line, and the connection between the base station 23 and the second-standard network 22 is a dashed line, which indicates that the UE26 is attached to the first-standard network 21.
As shown in fig. 2B, when the UE26 has voice traffic, the UE26 falls back to the second-standard network 22 to process the voice traffic according to the indication of the network device, that is, the connection between the serving base station of the UE26 and the first-standard network 21 is a dashed line, and the connection between the serving base station of the UE26 and the second-standard network 22 is a solid line, which indicates that the UE26 is attached to the second-standard network 21 and is processing the voice traffic.
It is understood that after the voice service is processed, the UE26 can be re-attached to the first-standard network 21, i.e., the connection status of the UE26 with the wireless network can be switched from fig. 2B back to fig. 2A.
Because the first-system network does not have the CS domain processing capability, in practical application, the CSFB method is usually adopted to drop the UE attached to the first-system network back to the second-system network to process the voice service; after the voice service is processed, the voice service is attached to the first standard network again, so that the CS domain processing resources of the second standard network are fully utilized to process the CS domain voice service on the premise that the UE processes the PS domain data service as far as possible, the resource utilization rate of the second standard network is improved, the deployment cost and the operation cost of the wireless network are reduced, and the investment income is increased.
303. And the network equipment indicates the UE to be attached to the second-system network.
Of course, in a case that at least two first tracking areas in the first tracking area list do not support CSFB, in order to ensure that the user does not miss the voice service with high real-time requirement, the network device instructs the UE to directly attach to the second-standard network that does not support CSFB but can support CS domain voice service.
It should be noted that, when all the first tracking areas do not support CSFB, the network device instructs the UE to attach to the second-standard network to process all services including the voice service, thereby avoiding a situation that the UE cannot respond to the voice service when residing on the first-standard network, and improving reliability of processing the voice service by the network device. Moreover, since the UE resides on the second standard network supporting the voice service, the UE can directly process the voice service without switching the network, and the speed of responding to the voice service is high.
In the method for allocating a tracking area list provided in the embodiment of the present application, in a process of attaching a UE to a network, a network device allocates a tracking area list to the UE, and all tracking areas included in the allocated tracking area list have the same CSFB support capability, so as to indicate that the UE is attached to a first system network or a second system network according to the CSFB support capabilities of all tracking areas in the tracking area list. Therefore, because the tracking areas in the tracking area list have the same CSFB support capability, when the UE moves across the tracking areas in the coverage area of the tracking area list, the UE does not need to frequently initiate the procedures of attachment, tracking area update and the like to the wireless network to update the position information of the UE, the signaling interaction between the UE and the wireless network can be reduced, and the wireless network resources are further saved.
In addition, the method for allocating the tracking area list provided by the embodiment of the application can avoid the situation that the voice service is interrupted due to the flow failure of the attachment, the tracking area update and the like when the voice service exists in the UE, and is beneficial to improving the reliability of the wireless network for processing the voice service.
In addition, in consideration of mobility of the UE, the UE may move from a tracking area in the first tracking area list to another tracking area, and the moved tracking area (for convenience of description, the embodiment of the present application is described as a second tracking area) is not located in the first tracking area list. In this scenario, the UE needs to be re-allocated with the tracking area list.
Referring to fig. 6, the method includes steps 601 and 602:
601. when the UE enters a second tracking area from the first tracking area, the network equipment receives a tracking area list updating request sent by the UE.
Wherein the tracking area list update request carries the CSFB support capability of the second tracking area.
It should be noted that the CSFB support capability of the second tracking area may be the same as or different from that of the first tracking area in the first tracking area list, and this is not limited in this embodiment of the application.
Illustratively, as shown in fig. 6A and 6B, the first tracking area list 62 allocated by the network device for the UE61 includes at least two first tracking areas TA1 and TA 2. In the process that the UE61 moves from the edge area (e.g., TA2) of the first tracking area list 62 to the second tracking area TA3 outside the coverage area of the first tracking area list 62 along the movement locus 64, the UE initiates a tracking area list update request to the network device.
602. The network equipment allocates a second tracking area list to the UE.
Wherein the second tracking area list comprises second tracking areas, and all tracking areas in the second tracking area list have the same CSFB support capability as the second tracking area.
In this step, when the UE crosses the boundary of the first tracking area and enters the second tracking area, the network device needs to re-allocate a new tracking area list to the UE to ensure that the wireless network can reliably page the UE. The second tracking area list allocated to the UE by the network device includes at least one other tracking area having the same CSFB support capability as the second tracking area, in addition to the second tracking area.
In one embodiment, when the CSFB support capability of the second tracking area is the same as the CSFB support capability of the first tracking area list, the second tracking area list may include a first tracking area closer to the second tracking area in the first tracking area list, for example, a first tracking area adjacent to the second tracking area. In other words, in such a scenario, the second tracking area list may have a non-empty intersection with the first tracking area list.
Illustratively, as shown in fig. 6A, when the UE61 moves from the first tracking area TA2 to the second tracking area TA3 along the movement trace 64, the network device allocates the second tracking area list 63 to the UE according to the CSFB support capability of the second tracking area TA 3. The second tracking area list 63 comprises the second tracking area TA3 and at least one other tracking area, e.g. tracking area TA4, having the same CSFB support capability as the second tracking area TA 3. Further, the second tracking area list may also include a first tracking area, e.g., a first tracking area TA2, adjacent to the second tracking area TA 3.
In another embodiment, the second tracking area list cannot include any one of the first tracking areas in the first tracking area list when the CSFB support capability of the second tracking area is different from the CSFB support capability of the first tracking area list.
Exemplarily, as shown in fig. 6B, the CSFB support capability of the second tracking area TA3 is different from the CSFB support capability of the first tracking area TA2 in the first tracking area list 62, and the second tracking area list 63 allocated by the network device for the UE61 cannot include any one of the first tracking areas in the first tracking area list 62, for example, the first tracking area TA1 or TA 2.
According to the method for allocating the tracking area list, the network equipment needs to allocate the tracking area list for the UE again only when the UE crosses the boundary of the coverage area of the first tracking area list and moves to the second tracking area outside the coverage area of the first tracking area list, namely when the UE moves in the coverage area of the first tracking area list, the network equipment does not need to allocate the tracking area list for the UE again or update part of the tracking areas in the first tracking area list, signaling interaction between the network equipment and the UE is reduced, wireless network resources are saved, power consumption of the UE can be reduced, and cruising ability of the UE is enhanced.
As shown in fig. 7, the present embodiment provides an apparatus 70 for implementing the method flow shown in fig. 3. The apparatus 70 comprises:
an allocating unit 71, configured to allocate a first tracking area list to a user equipment UE in a network attachment process of the UE, where the first tracking area list includes at least two first tracking areas, and the at least two first tracking areas have a same CSFB support capability;
a sending unit 72, configured to instruct the UE to attach to the first-standard network if at least two first tracking areas both support CSFB;
a sending unit 72, configured to instruct the UE to attach to the second-standard network if at least two first tracking areas do not support CSFB;
a storage unit 73 for storing relevant instructions and data.
In the device 70 for allocating a tracking area list provided in this embodiment, in a process of attaching a UE to a network, a network device allocates a tracking area list to the UE, and all tracking areas included in the allocated tracking area list have the same CSFB support capability, so as to instruct the UE to attach to a first-system network or a second-system network according to the CSFB support capabilities of all tracking areas in the tracking area list. Therefore, because the tracking areas in the tracking area list have the same CSFB support capability, when the UE moves across the tracking areas in the coverage area of the tracking area list, the UE does not need to frequently initiate the procedures of attachment, tracking area update and the like to the wireless network to update the position information of the UE, the signaling interaction between the UE and the wireless network can be reduced, the wireless network resources are further saved, the power consumption of the UE can be reduced, and the cruising ability of the UE is enhanced.
In addition, the method for allocating the tracking area list provided by the embodiment of the application can avoid the situation that the voice service is interrupted due to the flow failure of the attachment, the tracking area update and the like when the voice service exists in the UE, and is beneficial to improving the reliability of the wireless network for processing the voice service.
On the basis of the apparatus 70 shown in fig. 7, it can also be implemented as the apparatus 70 shown in fig. 8, for implementing the method flow shown in fig. 4. Wherein the device 70 further comprises:
a receiving unit 74, configured to receive an attach request sent by the UE, where the attach request is used to request a network device to allocate a tracking area list to the UE, and the attach request carries an identifier of a tracking area where the UE is currently located;
the processor 71 is further configured to obtain, according to the identifier of the tracking area where the UE is currently located, the CSFB support capability of the tracking area where the UE is currently located;
the processor 71 is further configured to allocate a first tracking area list to the UE, where the first tracking area list includes a tracking area where the UE is currently located, and all first tracking areas in the first tracking area list have the same CSFB support capability as the tracking area where the UE is currently located.
On the basis of the apparatus 70 shown in fig. 7 or fig. 8, it can also be implemented as another apparatus 70 shown in fig. 8, for implementing the method flow shown in fig. 5, wherein,
the sending unit 72 is further configured to instruct the UE to drop back from the network of the first standard to the network of the second standard to process the voice service when the UE has the voice service.
On the basis of the apparatus 70 shown in fig. 7, it can also be implemented as another apparatus 70 shown in fig. 7A for implementing the method flow shown in fig. 6, wherein,
the receiving unit 74 is further configured to receive a tracking area list update request sent by the UE when the UE enters the second tracking area from the first tracking area, where the tracking area list update request carries a CSFB supporting capability of the second tracking area;
the allocating unit 71 is further configured to allocate a second tracking area list to the UE, where the second tracking area list includes a second tracking area, and all tracking areas in the second tracking area list have the same CSFB support capability as the second tracking area.
As shown in fig. 8, the embodiment of the present application provides a network device 80, which is configured to implement the method flow shown in fig. 3. The network device 80 comprises a processor 81, a communication interface 82 and a memory 83, which are in communication with each other via a bus 84, wherein,
the processor 81 is configured to allocate a first tracking area list to a user equipment UE in a network attachment process of the UE, where the first tracking area list includes at least two first tracking areas, and the at least two first tracking areas have the same CSFB support capability;
a communication interface 82, configured to instruct the UE to attach to the first-standard network if at least two first tracking areas both support CSFB;
a communication interface 82, further configured to instruct the UE to attach to the second-standard network if at least two first tracking areas do not support CSFB;
and a memory 83 for storing instructions and data.
In the network device 80 provided in the embodiment of the present application, in a process of attaching the UE to the network, the network device allocates a tracking area list to the UE, and all tracking areas included in the allocated tracking area list have the same CSFB support capability, so as to indicate that the UE is attached to the first-standard network or the second-standard network according to the CSFB support capabilities of all tracking areas in the tracking area list. Therefore, because the tracking areas in the tracking area list have the same CSFB support capability, when the UE moves across the tracking areas in the coverage area of the tracking area list, the UE does not need to frequently initiate the procedures of attachment, tracking area update and the like to the wireless network to update the position information of the UE, the signaling interaction between the UE and the wireless network can be reduced, the wireless network resources are further saved, the power consumption of the UE can be reduced, and the cruising ability of the UE is enhanced.
In addition, the method for allocating the tracking area list provided by the embodiment of the application can avoid the situation that the voice service is interrupted due to the flow failure of the attachment, the tracking area update and the like when the voice service exists in the UE, and is beneficial to improving the reliability of the wireless network for processing the voice service.
On the basis of the network device 80 shown in fig. 8, it can also be implemented as another network device 80 shown in fig. 8, for implementing the method flow shown in fig. 4, wherein,
the communication interface 82 is further configured to receive an attach request sent by the UE, where the attach request is used to request the network device to allocate a first tracking area list to the UE, and the attach request carries a CSFB support capability of a tracking area where the UE is located;
and the processor 81 is further configured to allocate a first tracking area list to the UE, where the first tracking area list includes a tracking area where the UE is located, and all tracking areas in the first tracking area list have the same CSFB support capability as the tracking area where the UE is located.
On the basis of the network device 80 shown in fig. 8, it can also be implemented as another network device 80 shown in fig. 8, for implementing the method flow shown in fig. 5, wherein,
the communication interface 82 is further configured to instruct the UE to drop from the network of the first standard to the network of the second standard to process the voice service when the UE has the voice service.
On the basis of the network device 80 shown in fig. 8, it can also be implemented as another network device 80 shown in fig. 8, for implementing the method flow shown in fig. 6, wherein,
the communication interface 82 is further configured to receive a tracking area list update request sent by the UE when the UE enters the second tracking area from the first tracking area, where the tracking area list update request carries a CSFB support capability of the second tracking area;
the processor 81 is further configured to allocate a second tracking area list to the UE, where the second tracking area list includes a second tracking area, and all tracking areas in the second tracking area list have the same CSFB support capability as the second tracking area.
An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when loaded onto a computer and executed by the computer, causes the computer to execute the method according to any one of fig. 3 to 6.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general hardware, and certainly, the present application can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be substantially implemented or a part of the technical solutions contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a readable storage medium, such as a floppy disk, a hard disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application 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 application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A method for allocating a tracking area list, the method comprising:
in the process of attaching a User Equipment (UE) to a network, the network equipment allocates a first tracking area list to the UE, wherein the first tracking area list comprises at least two first tracking areas, and the at least two first tracking areas have the same Circuit Switched Fallback (CSFB) support capability; the first tracking area list comprises a tracking area where the UE is currently located, and all first tracking areas in the first tracking area list have the same CSFB supporting capability as the tracking area where the UE is currently located; the tracking area list allocated to the UE by the network equipment comprises the current tracking area of the UE, and all tracking areas in the tracking area list obtained by the UE have the same CSFB supporting capability;
if the at least two first tracking areas support CSFB, the network equipment indicates the UE to be attached to a first standard network; the first standard network supports a Packet Switching (PS) domain but does not support a Circuit Switching (CS) domain;
if the at least two first tracking areas do not support CSFB, the network equipment indicates the UE to be attached to a second-standard network; and the second standard network supports the CS domain.
2. The method of claim 1, wherein during the process of attaching to the network by the UE, the network device allocates a first tracking area list to the UE, and the method comprises:
the network equipment receives an attachment request sent by the UE, wherein the attachment request is used for requesting the network equipment to distribute a tracking area list for the UE, and the attachment request carries an identifier of a tracking area where the UE is located currently;
the network equipment acquires the CSFB supporting capability of the tracking area where the UE is currently located according to the identification of the tracking area where the UE is currently located;
the network equipment allocates the first tracking area list to the UE, the first tracking area list comprises a tracking area where the UE is located currently, and all first tracking areas in the first tracking area list have the same CSFB supporting capability as the tracking area where the UE is located currently.
3. The method according to claim 1 or 2, wherein after the network device indicates that the UE is attached to a first-system network, the method further comprises:
and when the UE has the voice service, the network equipment indicates the UE to fall back from the first standard network to the second standard network to process the voice service.
4. The method according to claim 1 or 2, wherein after the network device allocates the first tracking area list to the UE, the method further comprises:
when the UE enters a second tracking area from a first tracking area, the network equipment receives a tracking area list updating request sent by the UE, wherein the tracking area list updating request carries the CSFB supporting capability of the second tracking area;
and the network equipment allocates a second tracking area list to the UE, wherein the second tracking area list comprises the second tracking area, and all tracking areas in the second tracking area list have the same CSFB support capability as the second tracking area.
5. A network device, comprising:
the device comprises a processor and a control unit, wherein the processor is used for allocating a first tracking area list to User Equipment (UE) in a network attachment process of the UE, the first tracking area list comprises at least two first tracking areas, and the at least two first tracking areas have the same Circuit Switched Fallback (CSFB) support capability; the first tracking area list comprises a tracking area where the UE is currently located, and all first tracking areas in the first tracking area list have the same CSFB supporting capability as the tracking area where the UE is currently located; the tracking area list allocated to the UE by the network equipment comprises the current tracking area of the UE, and all tracking areas in the tracking area list obtained by the UE have the same CSFB supporting capability;
a communication interface, configured to instruct the UE to attach to a first-standard network if the at least two first tracking areas both support CSFB; the first standard network supports a Packet Switching (PS) domain but does not support a Circuit Switching (CS) domain;
the communication interface is further configured to instruct the UE to attach to a second-standard network if none of the at least two first tracking areas supports CSFB; and the second standard network supports the CS domain.
6. The network device of claim 5,
the communication interface is further configured to receive an attach request sent by the UE, where the attach request is used to request the network device to allocate a tracking area list to the UE, and the attach request carries an identifier of a tracking area where the UE is currently located;
the processor is further configured to obtain, according to the identifier of the tracking area where the UE is currently located, a CSFB support capability of the tracking area where the UE is currently located;
the processor is further configured to allocate the first tracking area list to the UE, where the first tracking area list includes a tracking area where the UE is currently located, and all first tracking areas in the first tracking area list have the same CSFB support capability as the tracking area where the UE is currently located.
7. The network device of claim 5 or 6,
the communication interface is further configured to instruct the UE to drop back from the first-standard network to the second-standard network to process the voice service when the UE has the voice service.
8. The network device of claim 5 or 6,
the communication interface is further configured to receive a tracking area list update request sent by the UE when the UE enters a second tracking area from a first tracking area, where the tracking area list update request carries a CSFB support capability of the second tracking area;
the processor is further configured to allocate a second tracking area list to the UE, where the second tracking area list includes the second tracking area, and all tracking areas in the second tracking area list have the same CSFB support capability as the second tracking area.
9. A computer-readable storage medium, having stored thereon a computer program which, when loaded onto a computer and executed by the computer, causes the computer to carry out the method of any one of claims 1 to 4.
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