WO2016184040A1

WO2016184040A1 - Access method and access terminal for satellite communication link

Info

Publication number: WO2016184040A1
Application number: PCT/CN2015/093441
Authority: WO
Inventors: 段敏
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-15
Filing date: 2015-10-30
Publication date: 2016-11-24
Also published as: CN106304227A

Abstract

An access method and access terminal for a satellite communication link, which relate to the technical fields of satellite communications and wireless cellular mobile communications. The method comprises: an AT under a cellular system receives signals of cells; and the AT determines, when the AT receives signals of a plurality of cells comprising cells of which cell bearer link types are a satellite link bearer type and a wire link bearer type and if the signals of the satellite link bearer type cells are the strongest among the signals of the plurality of cells, that all the wire link bearer type cells do not satisfy set conditions, and has access to the satellite link bearer type cells, wherein the set conditions comprise: signals of cells are greater than or equal to a minimum access signal-to-noise ratio threshold, and cell load information is non-overloaded. The technical solution optimizes capacity maximization of satellite link access bearer resources, and enables the satellite link access bearer resources to be reasonably applied.

Description

Method for accessing satellite communication link and access terminal

Technical field

This document relates to, but is not limited to, the field of satellite communication and wireless cellular mobile communication technologies, and in particular, to a method for accessing a satellite communication link and an access terminal.

Background technique

At present, there are many types of bearer systems for accessing the Internet such as 2G, 3G, and 4G. The most commonly used access bearers are accessed through wired networks, but for applications such as the ocean and the plateau that are not conducive to the implementation of wired link bearer projects. The scenario can generally be solved using a satellite link bearer. Because satellite resources are very limited, and the equipment is very expensive, when the satellite link is applied to the cellular system access bearer, its application resources are very valuable, so it is necessary to control the link capacity to be reasonably maximized.

When the wired bearer access network node and the satellite link bearer access network node signal physical coverage overlap area, it is very important for the overlapping area access terminal AT (Access Terminal) to select the service access network node, if the wired bearer access is selected. The network node may not occupy the scarce satellite link resources. If the satellite link is selected to bear the access network node, the satellite link resources will be occupied. In the current 2G, 3G, 4G and other cellular systems, when the AT receives multiple signals from the access network node cell, the target access cell is generally selected by the signal to noise ratio. Under normal circumstances, the system selects a cell with better signal and noise. As the target access cell, if the user of the above two bearer links physically covers the overlapping area, if the signal-to-noise ratio of the satellite link access node is good, the satellite link bearer access node is directly selected as the serving cell, and thus As a result, satellite link resources cannot be effectively and reasonably applied.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a method for accessing a satellite communication link and an access terminal, so as to solve the technical problem that the bearing resource of the satellite link that cannot be controlled to be scarce can be rationalized and applied in the related art.

The embodiment of the invention discloses a method for accessing a satellite communication link, and the method comprises:

The access terminal AT receives the cell signal under the cellular system;

When the AT receives a plurality of cell signals, where the plurality of cells include a cell carrying a link type of a satellite link bearer and a wired link bearer, if the cell bearer link type is a satellite link The signal of the bearer cell is the strongest among the multiple cell signals, and the AT determines that the cell carrying the link type of the cell is a cable link bearer does not meet the set condition, and accesses the satellite link bearer. Community

The setting condition includes that the signal of the cell is greater than or equal to a minimum access signal to noise ratio threshold, and the cell load information is non-overloaded.

Optionally, the foregoing method further includes:

If the signal of the cell carried by the satellite link is the strongest among the multiple cell signals, and the AT determines that there is a cell that meets the set condition in the cell carried by the wired link, the AT access is satisfied. The cell carried by the wired link of the setup piece.

Optionally, in the foregoing method, the cell that the AT accesses the wired link that meets the setting component includes:

If there are multiple cells satisfying the set condition in the cell carried by the wired link, the AT accesses the cell with the strongest signal among the cells carried by the wired link that meets the set condition.

Optionally, the foregoing method further includes:

The AT receives the cell overhead information in the wireless cellular system, and obtains the cell bearer link type and/or the cell load information of each cell by using the cell overhead information.

An embodiment of the present invention further discloses an access terminal AT, including:

a receiving unit, configured to receive a cell signal;

An access unit, configured to: when the receiving unit receives a plurality of cell signals, where the plurality of cells include a cell carrying a link type of a satellite link bearer and a wired link bearer, if the cell bearer The signal of the cell with the link type being the satellite link is the strongest among the multiple cell signals, and determining that the cell carrying the link type of the cell is a cable carrying the cable does not meet the set condition, and accessing the satellite a cell carried by the link;

Optionally, in the foregoing access terminal, the access unit is further configured to: the signal of the cell carried by the satellite link is the strongest among the multiple cell signals, and determine the cell carried by the wired link. If there is a cell that satisfies the set condition, the cell that is carried by the wired link that satisfies the setting component is accessed.

Optionally, in the foregoing access terminal, the access unit is configured to: access a cell that is connected to a wired link that satisfies a setting component by: performing multiple in a cell carried by the wired link When the cell that meets the set condition is satisfied, the cell with the strongest signal among the cells carried by the wired link that satisfies the set condition is accessed.

Optionally, in the foregoing access terminal, the receiving unit is further configured to receive cell overhead information in the wireless cellular system, and obtain, by using the cell overhead information, a cell bearer link type and/or cell load information of each cell.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.

The technical solution of the present application combines the characteristics of the satellite communication link and the communication principle of the wireless cellular system, and designs an access scheme for maximizing the application capacity of the satellite communication link, which is suitable for WIFI, and 2G, 3G, 4G and other wireless cellular systems. In the coverage scenario of multiple link networking applications, the space capacity of the satellite link access bearer resources is optimized by the scheme, and the satellite link access bearer resources are reasonably applied.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flow chart of a method for accessing a satellite communication link according to an embodiment of the present invention;

2 is a flowchart of processing for realizing satellite communication link access in an embodiment of the present invention;

FIG. 3 is a block diagram of a component of an access terminal AT according to an embodiment of the present invention.

Embodiments of the invention

The technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other arbitrarily.

Example 1

The embodiment provides a method for accessing a satellite communication link, as shown in FIG. 1 , which mainly includes the following operations:

The AT receives the cell signal under the cellular system;

When the AT receives multiple cell signals, and the cells in the multiple cell include the cell bearer link type being the satellite link bearer and the wired link bearer, if the cell bearer link type is the signal of the cell carried by the satellite link, If the cell is the strongest among the multiple cell signals, the AT accesses the cell carried by the satellite link when it determines that the cell carrying the link type of the cell is not the set condition.

The setting condition includes that the signal of the cell is greater than or equal to the minimum access signal to noise ratio threshold, and the cell load information is non-overload.

Correspondingly, the signal of the cell carried by the satellite link is the strongest among the multiple cell signals, but if it is determined that there is a cell in the cell carried by the wired link that meets the set condition, the AT will access the set condition. The cell carried by the wired link. It should be noted that if there are multiple cells satisfying the set condition in the cell carried by the wired link, the AT can access the cell with the strongest signal among the cells carried by the wired link that meets the set condition.

In addition, the AT can receive the cell overhead information under the wireless cellular system, and obtain the cell bearer link type and/or the cell load information of each cell from the received cell overhead information. For example, the cell configuration information in the cell overhead information indicates the bearer link type CellLinkType used by the cell, such as a wired link bearer, a satellite link bearer, and the like.

As can be seen from the embodiment, in order to implement the application coverage of multiple bearer link networking in the wireless communication system, the present application improves the reasonable application of the satellite link bearer resources, and increases the cell bearer link type indication information CellLinkType and cell load. The information and the minimum access signal to noise ratio threshold select the serving cell. The specific process of the method provided by this embodiment will be described below with reference to FIG. The specific embodiments are described in detail below, but are not to be construed as limiting.

As shown in FIG. 2, it is a processing flowchart of selecting a serving cell by adding a cell bearer link type indication information CellLinkType, a cell load information CellOverLoad, and a minimum access signal to noise ratio threshold MinAccessSNRThreshold according to an embodiment of the present invention. Includes the following steps:

Step 101: The access network starts a satellite link capacity application maximization function;

Step 102, the access network configuration user MinAccessSNRThreshold (minimum access signal to noise ratio threshold, the default value is -75, unit dbm);

Step 103: The access network configures a CellLinkType (Cell Bearer Link Type) parameter.

For example, a CellLinkType value of 1 indicates a satellite link bearer, and a CellLinkType value of 0 indicates a normal wired link bearer;

Step 104: The access network determines a cell load condition according to the number of access users of each cell, and sends a CellOverLoad parameter in the cell overhead message.

For example, the number of access users in the cell exceeds the preset LoadMaxUseNum (the maximum number of users in the load, the default setting is 50, the value can be set according to the load status of different wireless system cell users), then the value of the CellOverLoad parameter is 1, indicating that the cell is overloaded. , the value is 0, indicating non-overload;

Step 105: When the AT has multiple candidate set cells, first detect whether there is a cell carried by the satellite link with a CellLinkType value of 1 in the candidate set cell, and if yes, go to step 106 for processing, if not, go to step 109 to end the present. The process can be performed according to the relevant cell access procedure;

Step 106: The AT compares the signal to noise ratio of the candidate set cell. If the cell signal to noise ratio carried by the satellite link is the best, it is determined whether there is a signal noise in the cell of the non-satellite link bearer (in this example, the wired link bearer). a cell having a ratio greater than or equal to MinAccessSNRThreshold, if yes, proceeding to step 107, if not, accessing a cell carried by the satellite link;

Step 107: The AT detects whether the cell carrying the non-satellite link with the signal-to-noise ratio greater than or equal to the MinAccessSNRThreshold is overloaded, that is, whether the value of the CellOverLoad parameter is 0, and if yes, proceeds to step 108, and if not, accesses the cell carried by the satellite link. ;

It should be noted that if there are multiple cells carrying non-satellite links with a signal-to-noise ratio greater than or equal to MinAccessSNRThreshold, the AT sequentially detects whether the cells are overloaded, and if any of the cells are not overloaded, proceed to step 108, if all If it is overloaded, it accesses the cell carried by the satellite link.

Step 108: The cell in the AT candidate set cell is removed from the cell carried by the satellite link, and the other candidate is entered. The selected cell continues to perform access selection;

In step 109, the access network starts the satellite link capacity application maximization function ends.

Example 2

This embodiment provides an access terminal AT, which mainly includes the following units, as shown in FIG. 3.

a receiving unit, configured to receive a cell signal;

An access unit, configured to: when the receiving unit receives a plurality of cell signals, where the plurality of cells include a cell carrying a link type of a satellite link bearer and a wired link bearer, determining the cell bearer link type The signal of the cell carried by the satellite link is the strongest among the plurality of cell signals, and the cell carried by the satellite link is only accessed when the cell carrying the link type of the cell is not satisfied by the set condition.

Correspondingly, the access unit is further configured to: the signal of the cell carried by the satellite link is the strongest among the plurality of cell signals, but when it is determined that there is a cell that meets the set condition in the cell carried by the wired link, Enter the cell carried by the wired link that meets the setup.

It should be noted that, when there are multiple cells satisfying the set condition in the cell carried by the wired link, the access unit is configured to access the cell with the strongest signal among the cells carried by the wired link that meets the set condition.

In addition, the receiving unit is further configured to receive the cell overhead information in the wireless cellular system, and obtain the cell bearer link type and/or the cell load information of each cell from the received cell overhead information.

For the access terminal provided in this embodiment, the method provided in the foregoing Embodiment 1 can be implemented. For the detailed description of the access terminal in this embodiment, refer to the corresponding content in the foregoing Embodiment 1, and details are not described herein again.

The above content is a further detailed description of the present invention in combination with specific embodiments, and cannot be It is to be understood that the specific embodiments of the invention are limited only by the description.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The above technical solution is applicable to WIFI, and 2G, 3G, 4G and other wireless cellular systems. For a plurality of link networking application coverage scenarios, the satellite link access bearer resource capacity is maximized, and the satellite link access bearer resources are obtained. Reasonable application.

Claims

A method for accessing a satellite communication link, the method comprising:

The access terminal AT receives the cell signal under the cellular system;

When the AT receives a plurality of cell signals, where the plurality of cells include a cell carrying a link type of a satellite link bearer and a wired link bearer, if the cell bearer link type is a satellite link The signal of the bearer cell is the strongest among the multiple cell signals, and the AT determines that the cell carrying the link type of the cell is a cable link bearer does not meet the set condition, and accesses the satellite link bearer. Community

The setting condition includes that the signal of the cell is greater than or equal to a minimum access signal to noise ratio threshold, and the cell load information is non-overloaded.
The method of claim 1 further comprising:

If the signal of the cell carried by the satellite link is the strongest among the multiple cell signals, and the AT determines that there is a cell that meets the set condition in the cell carried by the wired link, the AT access is satisfied. The cell carried by the wired link of the setup piece.
The method of claim 2, wherein the AT accessing a cell that satisfies a wired link of the setter comprises:

If there are multiple cells satisfying the set condition in the cell carried by the wired link, the AT accesses the cell with the strongest signal among the cells carried by the wired link that meets the set condition.
The method of any one of claims 1 to 3, further comprising:

The AT receives the cell overhead information in the wireless cellular system, and obtains the cell bearer link type and/or the cell load information of each cell by using the cell overhead information.
An access terminal AT includes:

a receiving unit, configured to receive a cell signal;

An access unit, configured to: when the receiving unit receives a plurality of cell signals, where the plurality of cells include a cell carrying a link type of a satellite link bearer and a wired link bearer, if the cell bearer The signal of the cell with the link type being carried by the satellite link is the strongest among the plurality of cell signals, and it is determined that the cell carrying the link type of the cell is a carrier of the wired link does not satisfy the setting bar. Accessing a cell carried by the satellite link;

The setting condition includes that the signal of the cell is greater than or equal to a minimum access signal to noise ratio threshold, and the cell load information is non-overloaded.
The access terminal of claim 5,

The access unit is further configured to: the signal of the cell carried by the satellite link is the strongest among the plurality of cell signals, and determining that a cell that meets the set condition exists in the cell carried by the wired link, Accessing a cell carried by a wired link that satisfies the setter.
The access terminal of claim 6 wherein

The access unit is configured to implement access to a cell carried by a wired link that satisfies the setting component by:

When there are multiple cells satisfying the set condition in the cell carried by the wired link, the cell with the strongest signal among the cells carried by the wired link that meets the set condition is accessed.
The access terminal according to any one of claims 5 to 7,

The receiving unit is further configured to receive cell overhead information in the wireless cellular system, and obtain, by using the cell overhead information, a cell bearer link type and/or cell load information of each cell.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 4.