CN110944367A - 4G and 5G interoperation method - Google Patents
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- H—ELECTRICITY
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/305—Handover due to radio link failure
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
本发明公开了一种4G与5G互操作的方法，应用于支持4G或5G接入技术的终端，用户通过终端在4G/5G的网络注册时，进行终端与网络的互操作能力交互；根据网络与终端的互操作能力确定用户当前使用的互操作方式；网络的互操作能力更新下发，重新执行步骤S2从而更新用户当前使用的互操作方式。本发明提出可同时支持两种互操作方式的方案，网络侧可在N26接口发生故障时告知终端，并自动应用无N26接口互操作方式。本发明方式实现了4G与5G的平滑切换，改善用户体验。
The invention discloses a method for interoperating between 4G and 5G, which is applied to a terminal supporting 4G or 5G access technology. When a user registers with a 4G/5G network through the terminal, the interoperability between the terminal and the network interacts; The interoperability with the terminal determines the interoperability mode currently used by the user; the interoperability capability of the network is updated and issued, and step S2 is re-executed to update the interoperability mode currently used by the user. The present invention proposes a scheme that can support two interoperability modes at the same time, and the network side can notify the terminal when the N26 interface fails, and automatically apply the interoperability mode without the N26 interface. The method of the present invention realizes smooth switching between 4G and 5G, and improves user experience.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a 4G and 5G interoperation method.
Background
Because the wireless frequency adopted by the 5G system is higher, the coverage area of the base station is greatly reduced compared with that of the 4G system, so that the 5G system is bound to be only hot-spot coverage due to investment in the initial stage, and the 5G system needs to perform data service interoperation (i.e. switching) with the 4G system in order to keep the data service always online.
Currently, in the 3GPP standard, there are two 4G/5G interoperation methods, i.e., interoperation based on an N26 interface (interface between MME and AMF) and interoperation without N26. The interoperation method based on the N26 interface requires an N26 interface to be added between a 4G MME (Mobility management Entity) and a 5G AMF (Access and Mobility management function) to directly transmit context information of a user, and may provide better service experience.
When a user registers a network, and a terminal and a network interaction network interoperate and support capability, 1 bit is used for identifying the interoperation capability, that is, only 4G/5G interoperation based on an N26 interface is supported, or only 4G/5G interoperation without an N26 interface is supported, and the two interoperation methods cannot be simultaneously supported. This results in that when the network only supports the interoperation based on the N26 interface, if the link between the AMF and the MME (i.e., the N26 interface between the AMF and the MME) fails and the interoperation based on the N26 interface cannot be performed, the terminal cannot smoothly perform the handover between 4G and 5G and only perform network reselection, thereby affecting the user experience.
Disclosure of Invention
The invention provides a 4G and 5G interoperation method, which aims to solve the problem that the existing 4G and 5G interoperation cannot be smoothly switched when a link fails.
In order to achieve the above purpose, the technical means adopted is as follows:
A4G and 5G interoperation method is applied to a terminal supporting 4G or 5G access technology, and comprises the following steps:
s1, when a user registers in a 4G/5G network through a terminal, carrying out interoperation capability interaction between the terminal and the network;
s2, determining the interoperation mode currently used by a user according to the interoperation capacity of the network and the terminal;
and S3, updating and issuing the interoperation capability of the network, and re-executing the step S2 so as to update the interoperation mode currently used by the user.
Preferably, the step S1 specifically includes: when a user registers in a 4G/5G network through a terminal, sending a registration request, wherein the registration request carries a 4G/5G interoperation mode supported by the terminal; and the 4G/5G network returns a registration acceptance message, wherein the registration acceptance message carries the 4G/5G interoperation mode supported by the network.
Preferably, the 4G/5G interoperation modes supported by the terminal and the network both include: only interoperation based on the N26 interface is supported; only supporting the interoperation without the N26 interface; and meanwhile, the interoperability based on the N26 interface and the interoperability without the N26 interface are supported.
Preferably, the step S2 specifically includes: and the terminal and the network respectively determine the current interoperation mode used by the user according to the received 4G/5G interoperation mode supported by the opposite terminal and the received 4G/5G interoperation mode supported by the local terminal, and the terminal and the network work for the user according to the determined interoperation mode.
Preferably, the determining, by the terminal and the network in step S2, the interoperation mode currently used by the user according to the received 4G/5G interoperation mode supported by the peer end and the received 4G/5G interoperation mode supported by the home end respectively includes the following situations:
when the terminal and the network both support the interoperation based on the N26 interface and the interoperation without the N26 interface, determining that the interoperation mode based on the N26 interface is used;
otherwise, determining the interoperation mode supported by both the terminal and the network; when the terminal only supports the interoperation based on the N26 interface or only supports the interoperation without the N26 interface, and the network only supports the interoperation without the N26 interface or only supports the interoperation based on the N26 interface, the user cannot interoperate in the current 4G/5G network.
Preferably, the step S3 specifically includes: when the 4G/5G interoperation mode supported by the network changes, the network initiates a configuration updating process, wherein the configuration updating process carries the latest 4G/5G interoperation mode supported by the network, and then the terminal completes the configuration updating process in a matching manner, and re-executes step S2, thereby updating the interoperation mode currently used by the user. In the preferred scheme, after the interoperation capability of the network changes, the renegotiation with the terminal is initiated in real time, and the terminal and the network redetermine the currently used 4G/5G interoperation mode of the user, so that smooth switching of 4G and 5G interoperation during link failure is realized.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a 4G/5G interoperation mode for dynamically adjusting a user, aiming at the problems that the existing 4G and 5G interoperation can not only fixedly select one interoperation mode, and when the interoperation capability of a network is changed, a terminal can not dynamically change the interoperation capability. The network side can simultaneously support two interoperation schemes and inform the terminal, when the N26 interface fails, the network can automatically switch to interoperation without the N26 interface, and therefore the problem that existing 4G and 5G interoperation cannot be smoothly switched when a link fails is solved.
Drawings
FIG. 1 is a flowchart of the method of example 1.
Fig. 2 is a flow chart of a 4G/5G interoperation mode change of a 5G user in embodiment 2.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
A method for interoperation between 4G and 5G is applied to a terminal supporting a 4G or 5G access technology, as shown in fig. 1, and includes the following steps:
s1, when a user registers in a 4G/5G network through a terminal, carrying out interoperation capability interaction between the terminal and the network, specifically:
when a user registers in a 4G/5G network through a terminal, sending a registration request, wherein the registration request carries a 4G/5G interoperation mode supported by the terminal; and the 4G/5G network returns a registration acceptance message, wherein the registration acceptance message carries the 4G/5G interoperation mode supported by the network. The 4G/5G interoperation modes supported by the terminal and the network comprise: only interoperation based on the N26 interface is supported; only supporting the interoperation without the N26 interface; and meanwhile, the interoperability based on the N26 interface and the interoperability without the N26 interface are supported.
S2, the terminal and the network respectively determine the interoperation mode currently used by the user according to the received 4G/5G interoperation mode supported by the opposite terminal and the received 4G/5G interoperation mode supported by the local terminal, and the terminal and the network work on the user according to the determined interoperation mode, specifically:
when the terminal and the network both support the interoperation based on the N26 interface and the interoperation without the N26 interface, determining that the interoperation mode based on the N26 interface is used;
otherwise, determining the interoperation mode supported by both the terminal and the network; when the terminal only supports the interoperation based on the N26 interface or only supports the interoperation without the N26 interface, and the network only supports the interoperation without the N26 interface or only supports the interoperation based on the N26 interface, the user cannot interoperate in the current 4G/5G network.
And S3, when the 4G/5G interoperation mode supported by the network changes, the network initiates a configuration updating process, wherein the configuration updating process carries the latest 4G/5G interoperation mode supported by the network, then the terminal completes the configuration updating process in a matching manner, and the step S2 is executed again, so that the interoperation mode currently used by the user is updated.
Example 2
This embodiment 2 exemplifies the method of the present invention by changing the 4G/5G interoperation mode of the 5G user, as shown in the 4G/5G interoperation system architecture of fig. 2:
(1)5GAMF (Access and Mobility Management function) supports two interoperation modes based on an N26 interface and without an N26 interface. The interface N26, i.e. the link between AMF and MME (mobility Management entity);
(2) and the 5G UE (User Equipment) initiates a registration request and successfully accesses the 5G network. In the registration request message sent by the UE, the 4G/5G interworking mode supported by the terminal itself is carried (in this embodiment, the interworking mode based on N26 and the interworking mode without N26 are simultaneously supported); then, the AMF carries the 4G/5G interworking mode supported by the network in the registration accept message sent to the UE (in this embodiment, the AMF simultaneously supports the interworking modes based on N26 and no N26);
(3) and the UE and the AMF determine that the user selects to use the interoperation mode based on N26 according to the interoperation mode of 4G/5G supported by the opposite terminal. The user performs 4G/5G interoperation through an interoperation mode based on N26;
(4) when an N26 interface between the AMF and the MME fails, the AMF initiates a configuration update procedure, where the configuration update procedure carries a 4G/5G interoperation mode supported by the current network (in this embodiment, an interoperation mode without N26 is supported only);
(5) after receiving the configuration updating request, the UE updates the locally stored network information and returns a configuration updating response so as to complete a configuration updating process;
(6) and the UE and the AMF determine that the user selects the interoperation mode without N26 according to the interoperation modes of 4G/5G supported by the opposite terminal and the interoperation capability of the home terminal. The user then performs 4G/5G interoperation in an interoperation mode without N26.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A method for interoperation between 4G and 5G is applied to a terminal supporting a 4G or 5G access technology, and is characterized by comprising the following steps:
s1, when a user registers in a 4G/5G network through a terminal, carrying out interoperation capability interaction between the terminal and the network;
s2, determining the interoperation mode currently used by a user according to the interoperation capacity of the network and the terminal;
and S3, updating and issuing the interoperation capability of the network, and re-executing the step S2 so as to update the interoperation mode currently used by the user.
2. The method according to claim 1, wherein the step S1 specifically comprises: when a user registers in a 4G/5G network through a terminal, sending a registration request, wherein the registration request carries a 4G/5G interoperation mode supported by the terminal; and the 4G/5G network returns a registration acceptance message, wherein the registration acceptance message carries the 4G/5G interoperation mode supported by the network.
3. The method according to claim 2, wherein the 4G/5G interworking modes supported by the terminal and the network each include: only interoperation based on the N26 interface is supported; only supporting the interoperation without the N26 interface; and meanwhile, the interoperability based on the N26 interface and the interoperability without the N26 interface are supported.
4. The method according to claim 3, wherein the step S2 specifically comprises: and the terminal and the network respectively determine the current interoperation mode used by the user according to the received 4G/5G interoperation mode supported by the opposite terminal and the received 4G/5G interoperation mode supported by the local terminal, and the terminal and the network work for the user according to the determined interoperation mode.
5. The method according to claim 4, wherein the determining, by the terminal and the network in step S2, the currently used interoperation mode of the user according to the received 4G/5G interoperation mode supported by the peer end and the received 4G/5G interoperation mode supported by the home end respectively comprises:
when the terminal and the network both support the interoperation based on the N26 interface and the interoperation without the N26 interface, determining that the interoperation mode based on the N26 interface is used;
otherwise, determining the interoperation mode supported by both the terminal and the network; when the terminal only supports the interoperation based on the N26 interface or only supports the interoperation without the N26 interface, and the network only supports the interoperation without the N26 interface or only supports the interoperation based on the N26 interface, the user cannot interoperate in the current 4G/5G network.
6. The method according to claim 5, wherein the step S3 specifically comprises: when the 4G/5G interoperation mode supported by the network changes, the network initiates a configuration updating process, wherein the configuration updating process carries the latest 4G/5G interoperation mode supported by the network, and then the terminal completes the configuration updating process in a matching manner, and re-executes step S2, thereby updating the interoperation mode currently used by the user.
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| CN114258005A (en) * | 2021-12-22 | 2022-03-29 | 努比亚技术有限公司 | Method for registering from 4G to 5G, mobile terminal and readable storage medium |
| WO2023130856A1 (en) * | 2022-01-05 | 2023-07-13 | 中国联合网络通信集团有限公司 | Communication method and apparatus, and core network device, terminal device and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113938963A (en) * | 2021-09-03 | 2022-01-14 | 中国联合网络通信集团有限公司 | A communication interoperability method and device |
| CN113938963B (en) * | 2021-09-03 | 2023-08-08 | 中国联合网络通信集团有限公司 | Communication interoperation method and device |
| CN114258005A (en) * | 2021-12-22 | 2022-03-29 | 努比亚技术有限公司 | Method for registering from 4G to 5G, mobile terminal and readable storage medium |
| WO2023130856A1 (en) * | 2022-01-05 | 2023-07-13 | 中国联合网络通信集团有限公司 | Communication method and apparatus, and core network device, terminal device and storage medium |
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