阅读说明：本技术 一种海量gnss终端的位置服务方法 (Location service method for massive GNSS terminals ) 是由 冯威 黄丁发 于 2020-04-14 设计创作，主要内容包括：本发明提供了一种GNSS终端的位置服务方法,包括以下步骤：S1、获取GNSS差分改正数；S2、将所述GNSS差分改正数传输至通信基站处的位置服务模块；S3、由通信基站处的位置服务模块将所述差分改正数传输至与该通信基站连接的定位终端。本发明充分考虑了GNSS差分改正数和通信基站两者的空间分布相关性,优化了差分改正数的数据通信路径,有利于提升地基增强位置服务资源的利用率,能够很好适用于海量终端的增强位置服务。(The invention provides a position service method of a GNSS terminal, which comprises the following steps: s1, acquiring a GNSS differential correction number; s2, transmitting the GNSS differential correction to a position service module at a communication base station; and S3, transmitting the differential correction number to a positioning terminal connected with the communication base station by the position service module at the communication base station. The invention fully considers the spatial distribution correlation of the GNSS differential correction number and the communication base station, optimizes the data communication path of the differential correction number, is beneficial to improving the utilization rate of the foundation enhanced position service resources, and can be well suitable for the enhanced position service of massive terminals.)

1. A location service method of a mass GNSS terminal is characterized by comprising the following steps:

s1, acquiring a GNSS differential correction number;

s2, transmitting the GNSS differential correction to a position service module at a communication base station;

and S3, transmitting the GNSS differential correction number to a positioning terminal connected with the communication base station through a position service module at the communication base station.

2. The method for location services of massive GNSS terminals as claimed in claim 1, further comprising step S0 before the step S1:

and S0, associating the GNSS differential corrections with the communication base station in the range of the GNSS differential corrections according to the service range of the GNSS differential corrections and the signal coverage range of the communication base station.

3. The method for location service of massive GNSS terminals according to claim 2, wherein said step S0 comprises the steps of:

s0-1, determining the service range of each GNSS differential correction number in the coverage range of the GNSS reference station network, and acquiring the signal coverage range of each communication base station in the coverage range of the GNSS reference station network;

and S0-2, associating the GNSS differential corrections with the communication base stations, wherein the service range of the GNSS differential corrections and the signal coverage range of each communication base station are intersected.

4. The location service method of a massive number of GNSS terminals according to claim 1, wherein said step S2 specifically is:

transmitting a GNSS difference correction number which is closest to the communication base station to a position service module at the communication base station; or

Transmitting the GNSS differential correction number in the signal coverage area of the communication base station to a position service module at the communication base station; or

The GNSS differential corrections associated with the communication base station are transmitted to a location services module at the communication base station.

5. The location service method of mass GNSS terminals according to claim 4, wherein the location service module is a location service module at a communication base station; or

And the external position service module is connected with the communication base station, and the GNSS differential correction is stored in the position service module.

Technical Field

The invention belongs to the technical field of Beidou/GNSS foundation enhanced position service, and particularly relates to a position service method of massive GNSS terminals.

Background

GNSS high-precision location services have been increasingly used in various industries, such as engineering survey, fine agriculture, industrial automation, smart cities, unmanned driving, and the like. With the increasing scale of the number of users, the computation resources and network bandwidth resources consumed by the server side of the conventional GNSS ground-based enhanced location service will also increase proportionally. When it is necessary to provide a ground-based enhanced location service for a large number of terminal devices, the conventional mode will face a great challenge: (1) in a traditional mode, each positioning terminal needs to be connected with a server and carries out bidirectional data transmission, and under the condition of massive users, the data communication load of the server is extremely large, so that the server is not beneficial to massive user services; (2) in a traditional service mode, even if differential positioning data required by positioning terminals adjacent to a geographical position are the same, each terminal still needs to repeatedly communicate with a server, calculation and network resources of the server need to be consumed, and efficient utilization of the resources cannot be well realized; (3) the traditional mode needs bidirectional data transmission of the server and the positioning terminals, and is not beneficial to enhancing the position service of the mass positioning terminals.

Disclosure of Invention

Aiming at the defects in the prior art, the location service method for the mass GNSS terminals provided by the invention solves the existing problems.

In order to achieve the above purpose, the invention adopts the technical scheme that:

the scheme provides a location service method of a mass GNSS terminal, which comprises the following steps:

s1, acquiring a GNSS differential correction number;

s2, transmitting the GNSS differential correction to a position service module at a communication base station;

and S3, transmitting the GNSS differential correction number to a positioning terminal connected with the communication base station by a position service module at the communication base station.

Further, before the step S1, a step S0 is further included:

and S0, associating the GNSS differential corrections with the communication base station according to the service range of each GNSS differential correction and the signal coverage range of each communication base station, wherein the two ranges are intersected.

Still further, the step S0 includes the following steps:

s0-1, determining the service range of each GNSS differential correction number in the coverage range of the GNSS reference station network, and acquiring the signal coverage range of each communication base station in the coverage range of the GNSS reference station network;

and S0-2, associating the GNSS differential corrections with the communication base stations, wherein the service range of the GNSS differential corrections and the signal coverage range of each communication base station are intersected.

Still further, step S2 is specifically:

transmitting a GNSS difference correction number which is closest to the communication base station to a position service module at the communication base station; or

Transmitting the GNSS differential correction number in the signal coverage area of the communication base station to a position service module at the communication base station; or

The GNSS differential corrections associated with the communication base station are transmitted to a location services module at the communication base station.

Still further, the location service module is a location service module at a communication base station; or

And the external position service module is connected with the communication base station, and the GNSS differential correction is stored in the position service module.

The invention has the beneficial effects that:

(1) the positioning terminal is not required to be connected to the server, so that the calculation and communication resource consumption of the server is irrelevant to the number of the positioning terminals of the service, and the position service of a large number of GNSS terminals can be realized;

(2) the positioning terminal only carries out data communication with the connected communication base station, thereby greatly reducing the route length of data communication in the traditional mode, saving data communication resources and being beneficial to ensuring the low time delay of differential correction;

(3) the positioning terminal does not need to send information to the communication base station, the communication base station and the positioning terminal can realize one-way data transmission, and the number of the positioning terminals served by a single communication base station is favorably increased;

(4) the invention fully considers the spatial distribution correlation of the GNSS differential correction number and the communication base station, optimizes the data communication path of the differential correction number and is beneficial to improving the utilization rate of the foundation enhanced position service resources.

Drawings

FIG. 1 is a flowchart of the method of this embodiment 1.

Fig. 2 is a flowchart of the method of the embodiment 2.

Fig. 3 is a flowchart of the method in embodiment 3.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.