CN108093084B

CN108093084B - Dynamic position information local updating and inquiring method for mobile network entity

Info

Publication number: CN108093084B
Application number: CN201810027662.6A
Authority: CN
Inventors: 王劲林; 陈君; 程钢; 叶晓舟; 邓浩江; 王玲芳; 齐卫宁
Original assignee: Institute of Acoustics CAS; Beijing Hili Technology Co Ltd
Current assignee: Institute of Acoustics CAS; Beijing Hili Technology Co Ltd
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2020-09-08
Anticipated expiration: 2038-01-11
Also published as: CN108093084A; WO2019137160A1; JP7046202B2; JP2021510282A; SG11202006168YA

Abstract

The invention discloses a method for locally updating and inquiring dynamic position information of a mobile network entity, which adopts a distributed container with a hierarchical nested structure to process the registration and the inquiry of the position information of the network entity, and comprises the following steps: step 1) when a network entity registers new position information to a container where the network entity is located, the current container updates and releases the new position information to the container where the network entity is located before moving; step 2) when the network forwarding equipment learns that the network entity is not reachable currently, the new position information of the network entity is inquired for a container where the network entity is located before moving; after the container before moving receives the query request, acquiring new position information of the network entity through query in the container; and 3) the network forwarding equipment modifies the network address information in the communication session message and forwards the session message according to the new position information of the entity obtained by inquiry.

Description

Dynamic position information local updating and inquiring method for mobile network entity

Technical Field

The present invention relates to the field of network technology and communication technology, and in particular, to a method for locally updating and querying dynamic location information of a mobile network entity.

Background

The mobility management technology manages the position information, security and service continuity of the mobile terminal, strives to optimize the contact state between the terminal and the network, and further provides guarantee for the application of various network services.

The terminal high-speed movement can cause the problem of rapid change of the IP address of the existing Internet system, the core idea of an Information Center Network (ICN) is that the name and the address are separated, the naming mechanism of the ICN is adopted, each entity in the network obtains an entity unique identifier irrelevant to the position as the name, and the problem of rapid change of the IP address in the communication process can be solved by dynamically binding the entity name and the current network address of the entity. The updating and query of the mapping relationship between the name and the network address are indispensable links in data communication, and the performance of the updating and query directly affects the network service quality.

For flat naming, it has become a trend to utilize a hierarchical structure to implement ICN name resolution. The prior art proposes a flattening analysis structure based on a hierarchical bloom filter, the structure constructs a multi-level nested container space, facilitates system expansion, and improves query efficiency in each container through the bloom filter. However, in a mobile environment, when the location information changes, the existing maintenance management mechanism of the container or the distributed hash structure cannot effectively support the application requirements with high requirements on delay control and service continuity.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: after the communication terminal network entity in the communication session changes its current network address due to movement, how to enable the network device responsible for the transmission and forwarding of its communication data to quickly query its moved current new address. The communication session can be ensured to be continuous by rapidly acquiring the new address information to realize that the communication message is forwarded to a new position in time.

In order to achieve the above object, the present invention provides a method for locally updating and querying dynamic location information of a mobile network entity, the method uses a distributed container with a hierarchical nested structure to process registration and query of location information of the network entity, when the network entity is connected to a network attachment point after moving and obtains new network address allocation, the new location information of the network entity is registered on the container where the network entity is currently located, the location information at least includes current network address information of the network entity, the method includes:

step 1) when a network entity registers new position information to a container where the network entity is located, the current container updates and releases the new position information to the container where the network entity is located before moving;

step 2) when the network forwarding equipment learns that the network entity is not reachable currently, the new position information of the network entity is inquired for a container where the network entity is located before moving; after the container before moving receives the query request, acquiring new position information of the network entity through query in the container;

and 3) the network forwarding equipment modifies the network address information in the communication session message and forwards the session message according to the new position information of the entity obtained by inquiry.

As an improvement of the above method, the step 1) specifically includes:

step 101) a network entity sends registration information to a container CM _ new where the network entity is located, wherein the content of the registration information at least comprises: network entity name, current valid location information, release sequence number, and addressing information of the container CM _ old where the mobile device is located before moving;

step 102) after the container CM _ new receives the registration information, judging whether the release serial number in the registration information is updated, if so, turning to step 103), otherwise, returning to the registration failure and ending the processing;

step 103) the container CM _ new updates the corresponding entity position information and the issued serial number information which are managed and stored in the container, and returns the processing result to the network entity, wherein the processing result comprises the addressing information of the CM _ new container; the network entity saves the received addressing information of the CM _ new container;

step 104) the CM _ new container judges whether the CM _ old in the registration information and the CM _ new container are the same container, if yes, the processing is ended, otherwise, the step 105) is executed;

step 105) the CM _ new container sends the received registration information to the CM _ old container;

step 106) after the CM _ old container receives the registration information, judging whether the release sequence number of the network entity name is newer than the currently stored sequence number information of the container, if so, updating the entity position information and the release sequence number which are managed and stored in the container; otherwise, no updating and publishing are performed.

As an improvement of the above method, the publication sequence number is maintained by the network entity, updated with each publication.

As an improvement of the above method, the addressing information of the container is an identifier or a network address of the container.

The invention has the advantages that:

the invention discloses a local updating and inquiring method of network entity position information supporting movement, which aims to solve the problem that when a communication terminal entity moves at different levels of speed, the network entity position information of a mobile communication terminal can be rapidly acquired again, thereby supporting the service requirements of recovering communication and maintaining the continuity of the session within given time.

Drawings

Fig. 1 is a schematic diagram illustrating a location information registration and local update process after a network entity moves.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

The invention adopts a distributed container with a hierarchical nested structure to register and inquire the position information of a network entity (UE). In the case that a UE changes its associated network attachment point due to movement, regardless of the direction and range of movement, it eventually falls under the management of a set of nested containers, and location information update within the global scope is completed based on this container architecture. Assuming that the registration of the UE location information after the UE moves is handled by a certain level container (denoted as level i) in the nested structure, an example of implementation of the registration, update and query procedure of the UE location information in the container is as follows:

when the network entity is connected to a network attachment point after moving and obtains new network address allocation, the new location information registration and update process of the network entity is as follows:

(1) the network entity interacts with the current underlying container to register new position information. The registration request information content includes: network entity name, current valid location information, publication sequence number, addressing information of the container (denoted as CM old) where the mobile is located, etc. And the bottom-layer container forwards the received position information registration request to the i-level container where the bottom-layer container is located.

(2) The level i container is responsible for handling registration information. Firstly, checking whether the received release sequence number of the network entity name is newer than the release sequence number corresponding to the network entity stored in the container, and storing and updating the received UE position information with the updated release sequence number. If the storage and the update are successful, the registration processing result is returned to the network entity through the bottom layer container, and the processing result also carries the communication addressing information of the i layer container.

(3) The i-level container judges whether the i-level container and the container where the i-level container is located before movement in the registration information are the same container, if so, propagation is finished, otherwise, the registration request is continuously forwarded to the container where the i-level container is located before movement, which is indicated in the registration information.

(4) And after the container before moving receives the registration information, only the network entity position information with the updated release sequence number is stored and updated.

(5) The network entity stores the communication addressing information of the container in the received registration processing result, and uses the communication addressing information as the 'container addressing information before movement' in the new position registration information after the next movement.

The query process is as follows:

(1) when finding out that the UE is not reachable, the network forwarding device on the UE communication data transmission path can initiate a query request of UE position information to a bottom container where the UE is located before moving, and the bottom container forwards the query request to an i-level container where the container is located, so that the query of the UE position information is completed.

(2) And the network forwarding equipment modifies the network address information in the communication session message and forwards the session message according to the new position information of the entity obtained by inquiry.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A local updating and query method for dynamic position information of a mobile network entity, the method adopts a distributed container with a hierarchical nested structure to process the registration and query of the position information of the network entity, when the network entity is connected to a network attachment point after moving and obtains new network address allocation, the new position information of the network entity is registered to the container where the network entity is located currently, the position information at least comprises the current network address information of the network entity, the method comprises the following steps:

step 3) the network forwarding equipment modifies the network address information in the communication session message and forwards the session message according to the new location information of the entity obtained by inquiry;

the step 1) specifically comprises the following steps:

2. The method of claim 1, wherein the publication sequence number is maintained by the network entity and updated with each publication.

3. The method of claim 1, wherein the addressing information of the container is an identifier or a network address of the container.