CN109429271B

CN109429271B - Terminal attachment method and device

Info

Publication number: CN109429271B
Application number: CN201710509352.3A
Authority: CN
Inventors: 王红毓
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-06-28
Filing date: 2017-06-28
Publication date: 2020-07-24
Anticipated expiration: 2037-06-28
Also published as: CN109429271A

Abstract

The invention provides a terminal attachment method and a terminal attachment device, the method comprises the steps of receiving a System Information Block (SIB) message broadcasted by a base station (eNodeB), judging a current Mobility Management Entity (MME) scene according to the SIB message, judging whether the weight of a local Mobility Management Entity (MME) is maximum according to the SIB message if the current MME scene is judged to be a MME POO L scene, deleting a local MME CODE if the weight of the local Mobility Management Entity (MME) is not maximum, and sending an attachment request message to the base station (eNodeB) to attach the terminal.

Description

Terminal attachment method and device

Technical Field

The invention relates to the technical field of mobile communication, in particular to a terminal attachment method and a terminal attachment device.

Background

Mobility Management Entity resource Pool (MME POO L), MME POO L refers to an Area composed of at least one MME, and is a complete set of Tracking Areas (TAs), and a terminal (UE) moves in a TA Area within the MME POO L without replacing a serving MME.

In order to achieve network resource load balancing, a weight is set for each MME in the MME POO L, so that the selection is carried out according to the size of the weight factor when the base station eNodeB selects the serving MME.

However, when the terminal already has a configured serving MME, the existing terminal attachment method does not attach according to the weight of each MME in the MME POO L, which is not beneficial to realizing load balancing of the MME POO L, and easily causes equipment overload.

In particular, in the scenario of MME POO L, a base station eNodeB connects multiple MMEs, the eNodeB needs to select a serving MME from the multiple MMEs, and in order for the base station eNodeB to decide the serving MME to accept the signaling of the terminal UE, a routing mechanism is defined in which, when an end UE roams out of MME POO L to the area of another group (or another) MME, the new MME does not know the internal structure of the original MME POO L, the new MME sends an Identity authentication request message or a context request message to the old MME in the original MME POO L through a global Unique Temporary UE Identity (GUTI), i.e., each MME serving one MME POO L, in which MME POO L there is its own dedicated GUTI number segment, the GUTI contains an MME Code, and the terminal carries the true MME attached to it, which results in that load balancing of epoo L cannot be achieved.

For example, when there are two MMEs (MME1 and MME2, and the weight ratio between MME1 and MME2 is 70: 30) in one MME POO L, the terminal UE will always select the same MME because of carrying MME Code, and even if the terminal UE served by MME2 is more than the terminal UE served by MME1, the terminal UE under MME2 will not select MME1 with large weight because of the weight of MME POO L when reattaching, which is not favorable for realizing load balancing of MME POO L, and easily causes equipment overload.

Disclosure of Invention

The embodiment of the invention provides a terminal attachment method and a terminal attachment device, which are used for solving the problems that the existing terminal attachment method is not beneficial to realizing load balancing of MME POO L and equipment overload is easily caused.

In a first aspect, an embodiment of the present invention provides a terminal attachment method, including:

receiving a system information block SIB message broadcasted by a base station eNodeB;

judging the current MME scene of the mobile management entity according to the SIB message;

if the current MME scene is judged to be a MME POO L scene, judging whether the weight of a local MME is the maximum according to the SIB message;

if the weight of the local mobile management entity MME is judged not to be the maximum, deleting a local mobile management entity CODE MME CODE;

and sending an attachment request message to the base station eNodeB to attach the terminal.

Optionally, if it is determined that the current MME scenario is a MME resource pool MMEPOO L scenario, the method includes:

if the system information block SIB message includes the weight of each mobility management entity MME in the mobility management entity resource pool MME POO L, determining that the current mobility management entity MME scenario is a mobility management entity resource pool MME POO L scenario.

Optionally, the sending an attach request message to the base station eNodeB includes:

and after the successful residence, sending a wireless connection control establishment completion signaling to the base station eNodeB, wherein the wireless connection control establishment completion signaling comprises an attachment request message.

Optionally, the method further comprises:

and if the weight of the local mobile management entity MME is judged to be the maximum, sending an attachment request message to the base station eNodeB, wherein the attachment request message comprises a local mobile management entity CODE MME CODE.

Optionally, before receiving a system information block SIB message broadcast by the base station eNodeB, the method further includes:

and carrying out physical downlink synchronization and cell selection.

In a second aspect, an embodiment of the present invention provides a terminal attachment apparatus, including:

a system information block message receiving unit, configured to receive a system information block SIB message broadcast by a base station eNodeB;

a mobility management entity scene judgment unit, configured to judge, according to the system information block SIB message, a current mobility management entity MME scene;

a weight determining unit, configured to determine whether a weight of a local mobility management entity MME is the maximum according to the system information block SIB message when determining that the current mobility management entity MME scene is a mobility management entity resource pool MME POO L scene;

a mobility management entity CODE deleting unit, configured to delete the local mobility management entity CODE MME CODE when it is determined that the weight of the local mobility management entity MME is not the maximum;

an attach request message sending unit, configured to send an attach request message to the base station eNodeB for terminal attachment.

Optionally, the weight determination unit is further configured to:

when the system information block SIB message includes the weight of each mobility management entity MME in the mobility management entity resource pool MME POO L, it is determined that the current mobility management entity MME scene is a mobility management entity resource pool MMEPOO L scene.

Optionally, the attach request message sending unit is further configured to:

and when the weight of the local mobile management entity MME is judged to be the maximum, sending an attachment request message to the base station eNodeB, wherein the attachment request message comprises a local mobile management entity CODE MME CODE.

Optionally, the method further comprises:

and the cell selection unit is used for carrying out physical downlink synchronization and cell selection.

In a third aspect, an embodiment of the present invention provides an electronic device, including: a processor, a memory, and a bus; wherein the content of the first and second substances,

the processor and the memory complete mutual communication through the bus;

the processor is used for calling the program instructions in the memory so as to execute the terminal attachment method.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the terminal attachment method described above.

According to the terminal attachment method and device provided by the embodiment of the invention, whether the weight of the local MME is the maximum is judged in the MMEPOO L scene by judging whether the weight is the MME POO L scene or not, and if not, the local MME CODE is deleted, so that the initial terminal selects the MME according to the weight and performs attachment, the probability of equipment overload is reduced, and the load balance of the MME POO L is better realized.

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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart illustrating a terminal attachment method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a terminal attachment method according to another embodiment of the present invention;

fig. 3 is a schematic structural view of a terminal attachment device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a flowchart illustrating a terminal attachment method according to an embodiment of the present invention. As shown in fig. 1, the method of this embodiment uses a terminal UE as an execution subject, and includes:

s11: receiving a system information block SIB message broadcasted by a base station eNodeB;

it should be noted that, after the terminal UE is powered on and started, the base station eNodeB sends a System Information Block (SIB) message to the terminal UE in a broadcast manner, where the System Information Block SIB message includes core network state Information.

S12: judging the current MME scene of the mobile management entity according to the SIB message;

in the context of the MME pool, POO L, the core network state information in the SIB message includes information of a plurality of MME, while in the context of a single MME, the core network state information in the SIB message includes information of only one MME.

S13, if the current MME scene is judged to be an MME POO L scene, judging whether the weight of the local MME is the maximum according to the SIB message;

it should be noted that, in the scenario that the mobility management entity MME POO L is stored in the terminal UE according to the embodiment of the present invention, the terminal UE determines, according to the system information block SIB message, whether the weight of the local mobility management entity MME corresponding to the local mobility management entity CODE MME CODE is the largest in the MME POO L.

S14: if the weight of the local mobile management entity MME is judged not to be the maximum, deleting a local mobile management entity CODE MME CODE; s15: sending an attachment request message to the base station eNodeB for terminal attachment;

therefore, the terminal UE deletes the local MME CODE, and does not carry the local MME CODE in the attach request message sent to the base station eNodeB, so that the terminal UE can select the serving MME according to the weight of each MME in the MME POO L, thereby better implementing the load balancing of the MME POO L.

It should be noted that, the attach process of the terminal UE before the actual service is performed is a precondition that the terminal UE communicates with the network, and the terminal UE can receive the service from the network only after the attach is successful. The terminal UE sends the attach request message to the base station eNodeB only as a part of the attach process, and the terminal attach can be completed only by performing the following processes of establishing a bearer, establishing an initial context, and the like. In the process of the embodiment of the present invention, details about the subsequent processes of establishing the bearer and establishing the initial context are not described herein again.

According to the terminal attachment method provided by the embodiment of the invention, whether the weight of the local MME is the maximum is judged in the MME POO L scene through judging whether the weight is the MME POO L scene, if not, the local MME CODE is deleted, the initial terminal selects the MME according to the weight and performs attachment, the probability of equipment overload is reduced, and the load balance of the MME POO L is better realized.

In an optional implementation manner of the embodiment of the present invention, if it is determined that the current mobility management entity MME scenario is a mobility management entity resource pool MME POO L scenario, the method includes:

In practical application, a base station eNodeB sends an S1 connection establishment request message to an MME, the MME returns an S1 connection establishment response message to the base station eNodeB, the S1 connection establishment response message carries weight information of the MME, and the base station eNodeB stores the weight information of the MME.

Further, the sending the attach request message to the base station eNodeB includes:

It should be noted that, in the embodiment of the present invention, after determining whether the weight of the local mobility management entity MME is the maximum, the terminal UE first performs camping, and performs attachment after successful camping; if the park fails, the process goes to step S11.

Specifically, the camping process of the terminal UE is as follows: the terminal UE selects random access resources after receiving the random access indication, and sends a random access Preamble (RA Preamble) on a selected random access channel; if the terminal UE receives a random access Response (RA Response) of the network, sending a random access request (RRC ConnectionRequest) signaling according to the uplink resource authorization; if no random access response (RRC Connection Setup) signaling of the network is received, the transmission of the random access preamble is continued until the maximum transmission times is reached, and the Connection establishment process is abandoned.

After the terminal UE successfully resides in the UE, a radio connection control setup complete signaling (RRCConnection setup) is sent to the base station eNodeB, where the radio connection control setup complete signaling includes an Attach Request (Attach Request) message.

In practical application, the random access Response (RA Response) includes a Preamble Index of a random access Preamble (RA Preamble), if the Preamble Index is consistent with the selection of the random access Preamble, the random access Response is considered to be received by the random access Response, if the random access Response is not received or the Preamble Index is inconsistent with the selection of the random access Response, the Preamble transmission counter is incremented by 1, if the Preamble transmission counter exceeds the maximum transmission number, the camping fails (the current random access fails), and the step S11 is skipped.

In practical applications, if the terminal UE fails to attach, the process goes to step S13 to delete the current MME CODE and perform camping and attaching again.

Further, the method further comprises:

It can be understood that, if the terminal UE determines that the weight of the local MME is the maximum, the terminal UE can directly send an attach request message to the base station eNodeB with the local MME CODE, i.e. directly execute the existing terminal attach procedure.

Further, before receiving a system information block SIB message broadcasted by the base station eNodeB, the method further includes:

and carrying out physical downlink synchronization and cell selection.

It should be noted that, after the terminal UE is powered off and restarted, physical downlink synchronization and cell selection are performed first. The cell selection of the terminal UE is divided into initial cell selection and selection based on the stored cell information, the initial cell selection is to search according to the quality of a channel, the selection based on the stored cell information can preferably select a cell in a storage table and ignore the channel quality of the cell, the terminal UE can preferentially perform the selection based on the stored cell information, and if the stored cells are not suitable, the initial cell selection is performed.

In practical application, when the initial cell selection is performed, the terminal UE does not know the current cell ID and other related information of the cell. Generally, a terminal UE first obtains time synchronization and frequency synchronization by detecting a synchronization channel, and then obtains related information of a current cell, such as a cell ID. Fig. 2 is a flowchart illustrating a terminal attachment method according to another embodiment of the present invention. As shown in fig. 2, the method of this embodiment uses a terminal as an execution main body, and includes:

s21: performing physical downlink synchronization and cell selection;

s22: receiving a system information block SIB message broadcasted by a base station eNodeB;

s23: judging the current MME scene of the mobile management entity according to the SIB message;

s24, if the current MME scene is judged to be an MME POO L scene, judging whether the weight of the local MME is the maximum according to the SIB message;

s25: if the weight of the local mobile management entity MME is judged not to be the maximum, deleting a local mobile management entity CODE MME CODE;

s26: if the weight of the local mobility management entity MME is judged to be the maximum, an attachment request message is sent to the base station eNodeB, and the attachment request message comprises a local mobility management entity CODE MME CODE;

s27: performing residence and judging whether the residence is successful or not;

s28: if the residence is successful, an attachment request message is sent to the base station eNodeB so as to carry out terminal attachment, and whether the attachment is successful or not is judged;

s29: if the resident fails, go to step S23;

s210: if the attachment is successful, accessing the network;

s211: if the attachment fails, the process goes to step S24.

The terminal attachment method provided by the embodiment of the invention judges whether the weight of the local MME is the maximum in the MME POO L scene or not in the MME POO L scene, if not, the local MME CODE is deleted, and the initial terminal selects the MME according to the weight and attaches the MME.

Fig. 3 is a schematic structural view of a terminal attachment device according to an embodiment of the present invention. As shown in fig. 3, the apparatus of the embodiment of the present invention includes a system information block message receiving unit 31, a mobility management entity scenario determining unit 32, a weight determining unit 33, a mobility management entity code deleting unit 34, and an attach request message sending unit 35, specifically:

a system information block message receiving unit 31, configured to receive a system information block SIB message broadcast by a base station eNodeB;

a mobility management entity scene determining unit 32, configured to determine a current mobility management entity MME scene according to the system information block SIB message;

a weight determining unit 33, configured to determine whether a weight of a local mobility management entity MME is the maximum according to the system information block SIB message when determining that the current mobility management entity MME scene is a mobility management entity resource pool MME POO L scene;

a mobility management entity CODE deleting unit 34, configured to delete the local mobility management entity CODE MME CODE when it is determined that the weight of the local mobility management entity MME is not the maximum;

an attach request message sending unit 35, configured to send an attach request message to the base station eNodeB for terminal attachment.

The terminal attachment device provided by the embodiment of the invention judges whether the weight of the local MME is the maximum in the MME POO L scene by judging whether the weight is the MME POO L scene or not, and if not, deletes the local MME CODE, selects and attaches the MME according to the weight by the initial terminal, thereby reducing the probability of equipment overload and better realizing the load balance of the MME POO L.

The weight determination unit 33 is further configured to:

The attach request message sending unit 35 is further configured to:

Further, still include:

The terminal attachment device of the embodiment of the present invention can be used to implement the above method embodiments, and the principle and technical effect are similar, which are not described herein again.

Referring to fig. 4, the electronic device includes: a processor (processor)41, a memory (memory)42, and a bus 43; wherein the content of the first and second substances,

the processor 41 and the memory 42 communicate with each other via a bus 43;

the processor 41 is configured to call program instructions in the memory 42 to perform the terminal attachment method provided by the above-described method embodiments.

Furthermore, the logic instructions in the memory 42 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. 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) 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: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The present embodiment provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the terminal attachment method provided by the above-described method embodiments.

The present embodiment provides a non-transitory computer-readable storage medium storing computer instructions that cause the computer to execute the terminal attachment method provided by the above-described method embodiments.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

The above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A terminal attachment method, comprising:

2. The method of claim 1, wherein if it is determined that the current Mobility Management Entity (MME) scenario is a MME POO L scenario, the method comprises:

3. The method of claim 1, wherein the sending the attach request message to the base station eNodeB comprises:

4. The method of claim 1, further comprising:

5. The method of claim 1, wherein before receiving a System Information Block (SIB) message broadcast by a base station (eNodeB), the method further comprises:

and carrying out physical downlink synchronization and cell selection.

6. A terminal attachment device, comprising:

7. The apparatus of claim 6, wherein the weight determination unit is further configured to:

when the system information block SIB message includes the weight of each mobility management entity MME in the mobility management entity resource pool MME POO L, it is determined that the current mobility management entity MME scenario is a mobility management entity resource pool MME POO L scenario.

8. The apparatus of claim 6, wherein the attach request message sending unit is further configured to:

9. The apparatus of claim 6, wherein the attach request message sending unit is further configured to:

10. The apparatus of claim 6, further comprising:

11. An electronic device, comprising: a processor, a memory, and a bus; wherein the content of the first and second substances,

the processor and the memory complete mutual communication through the bus;

the processor is configured to invoke program instructions in the memory to perform the terminal attachment method of any of claims 1-5.

12. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the terminal attachment method according to any one of claims 1 to 5.