WO2016119110A1

WO2016119110A1 - Resource access method, related device and m2m system

Info

Publication number: WO2016119110A1
Application number: PCT/CN2015/071578
Authority: WO
Inventors: 李龙; 李炜; 胡静
Original assignee: 华为技术有限公司
Priority date: 2015-01-26
Filing date: 2015-01-26
Publication date: 2016-08-04

Abstract

Provided in an embodiment of the present invention are a resource access method, related device and M2M system, addressing the problem in which a legacy device cannot access a resource abstracted from a common device. The device comprises: receiving, by CSE, a resource request message transmitted by a device, the resource request message comprising semantic model information and URI information of a resource; acquiring, by the CSE, the resource from a pre-stored resource set according to the URI information of the resource; and according to the semantic model information, determining, by the CSE, whether the resource comprises a sub-resource corresponding to the semantic model information, and if the sub-resource is abstracted from the legacy device by the CSE, then a semantic model of the sub-resource is a semantic model in a DeviceType, and if the sub-resource is abstracted from the common device by the CSE, then the semantic model of the sub-resource is a semantic model in a DeviceType and an Ontology type. The method is applied to the technical field of Internet of things.

Description

Method for accessing resources, related device and M2M system

Technical field

The present invention relates to the field of Internet of Things technologies, and in particular, to a resource access method, related device, and M2M system.

Background technique

With the continuous development of IoT technology research and development and market promotion, in order to strengthen the standardization work of the Internet of Things, the international standardization organization oneM2M in the field of Internet of Things was formally established in May 2011. oneM2M is a standards organization that develops a globally unified Machine to Machine (M2M) specification that sets standards for device and service communication standards for IoT applications. The basic goal is to unify global M2M technologies. Standards, which help reduce the cost of IoT application development, system integration and construction, operations, and after-sales services.

The existing devices of the Internet of Things application can be divided into two categories, one is a legacy device and the other is a common device. A legacy device is a device that supports a semantic model of the DeviceType type, and a generic device refers to a device that supports a semantic model of the Ontology type. In the prior art, a Common Service Entity (CSE) obtains a basic semantic resource corresponding to a semantic model of a DeviceType type by abstracting a legacy device; and an Ontology-type semantic model is obtained by abstracting a common device. Corresponding enhancement/complete semantic resources, the Ontology-type semantic model provides richer content than the semantic model of the DeviceType type.

Since the legacy device can only access the basic semantic resources corresponding to the semantic model of the DeviceType type, the prior art does not provide a method for the legacy device to access the enhanced/complete semantic resource corresponding to the semantic model of the Ontology type.

Summary of the invention

The embodiments of the present invention provide a resource access method, a related device, and an M2M system, which solve the problem that the legacy device in the existing M2M system cannot access the enhanced/complete semantic resource corresponding to the Ontology type semantic model.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for resource access, which is applicable to a machine-to-machine M2M system, and the method includes:

The general service entity CSE receives the resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The CSE acquires the resource from a pre-stored resource set according to the URI information of the resource;

The CSE determines, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic relationship between the sub-resource and a URI of the sub-resource. If the sub-resource is abstracted from the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device The semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, and the common device is a semantic model and Ontology supporting a DeviceType type. Type of semantic model of the device;

If yes, the CSE acquires a URI of the sub-resource and sends a URI of the sub-resource to the device.

In a first possible implementation, in combination with the first aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type;

The determining, by the CSE, whether the sub-resource corresponding to the semantic model information is included in the resource according to the semantic model information includes:

The CSE determines whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type.

In a second possible implementation, in combination with the first aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

Determining, by the CSE, whether the resource includes a sub-resource corresponding to a semantic model of an Ontology type;

After the CSE determines, according to the semantic model information, whether the resource includes the sub-resource corresponding to the semantic model information, the method further includes:

If not, the CSE sends an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

Receiving, by the CSE, a resource request message resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The CSE acquires the resource from the resource set according to the URI information of the resource;

Determining, by the CSE, whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type;

In a third possible implementation, in combination with the first aspect to the second possible implementation manner of the first aspect, before the CSE receiving the resource request message sent by the device, the method further includes:

The CSE receives a registration request message of the device, where the registration request message includes original device description information of the device;

The CSE acquires a semantic model of the DeviceType type corresponding to the original device description information according to the original device description information of the device;

The CSE abstracts the device into a resource corresponding to a semantic model of a DeviceType type, and allocates a URI for the resource;

Determining, by the CSE, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type according to the original device description information;

If yes, the CSE obtains the Ontology class corresponding to the original description information. Semantic model

The CSE saves resources corresponding to the semantic model of the DeviceType type, and abstracts the device into resources corresponding to the semantic model of the Ontology type.

In a second aspect, an embodiment of the present invention provides a resource access method, which is applicable to a machine-to-machine M2M system, and the method includes:

The device sends a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The device receives a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if the sub-resource is If the CSE abstracts the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, the sub-resource The semantic model is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, which is a device supporting a semantic model of the DeviceType type and a semantic model of the Ontology type.

In a first possible implementation, in combination with the second aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type;

The URI of the sub-resource of the device receiving the resource specifically includes:

The device receives a URI of the sub-resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

In a second possible implementation, in combination with the second aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

Before the device receives the URI of the sub-resource of the resource, the method further includes:

Receiving, by the device, an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The device resends a resource request message to the CSE, the resending The semantic model information included in the resource request message is a semantic model of the DeviceType type, and URI information of the resource;

The device receives a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

In a third aspect, an embodiment of the present invention provides a general service entity CSE, where the CSE includes: a receiving unit, a first acquiring unit, a determining unit, a second acquiring unit, and a sending unit;

The receiving unit is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The first acquiring resource, configured to acquire the resource from a pre-stored resource set according to the URI information of the resource;

The determining unit is configured to determine, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic model of the sub-resource and the sub-resource Corresponding relationship of the URI, if the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, if the sub-resource is the CSE-to-common device For abstraction, the semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, and the common device supports a DeviceType type. a semantic model and a device of the Ontology type semantic model;

The second obtaining unit is configured to acquire a URI of the sub-resource;

The sending unit is configured to send a URI of the sub-resource to the device.

In a first possible implementation, in combination with the third aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the determining unit is specifically configured to:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type.

In a second possible implementation, in combination with the third aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type, and the determining unit Specifically used for:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the Ontology type;

The sending unit is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiving unit is further configured to: receive a resource request message that is resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The first obtaining unit is further configured to: obtain the resource from the resource set according to the URI information of the resource;

The determining unit is further configured to: determine whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type;

The second obtaining unit is further configured to: acquire a URI of the sub-resource;

The sending unit is further configured to: send a URI of the sub-resource to the device.

In a third possible implementation, in combination with the second possible implementation manner of the third aspect to the third aspect, the CSE further includes a third obtaining unit and an abstracting unit, where the receiving unit is further configured to:

Receiving a registration request message of the device, where the registration request message includes original device description information of the device;

The third acquiring unit is configured to acquire, according to the original device description information of the device, a semantic model of the DeviceType type corresponding to the original device description information;

The abstracting unit is configured to abstract the device into a resource corresponding to a semantic model of a DeviceType type, and allocate a URI for the resource;

The determining unit is further configured to: determine, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type;

The third obtaining unit is configured to acquire a semantic model of the Ontology type corresponding to the original description information;

The abstracting unit is further configured to: abstract the device as a resource corresponding to a semantic model of the Ontology type.

In a fourth aspect, an embodiment of the present invention provides a device, where the device includes: a sending unit and a receiving unit;

The sending unit is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiving unit is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if The child resource is abstracted from the CSE for the legacy device, and the semantic model of the child resource is a semantic model of the DeviceType type. If the child resource is abstracted by the CSE for the common device, the The semantic model of the sub-resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device is a semantic model supporting the DeviceType type and a semantic model of the Ontology type. device of.

In a first possible implementation, in combination with the fourth aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the receiving unit is specifically configured to:

Receiving a URI of the sub-resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

In a second possible implementation, in combination with the fourth aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The receiving unit is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The sending unit is further configured to: resend a resource request message to the CSE, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiving unit is specifically configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

In a fifth aspect, an embodiment of the present invention provides a general service entity CSE, where the CSE includes: a receiver, a processor, a bus, a memory, and a transmitter;

The receiver is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

And the processor acquires, by using the bus, an instruction in the memory, to obtain the resource from a pre-stored resource set according to the URI information of the resource;

Determining, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if If the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, The semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, the semantic model supporting the DeviceType type and the semantics of the Ontology type. Model device

If yes, the CSE obtains a URI of the sub-resource;

The sender is configured to send a URI of the sub-resource to the device.

In a first possible implementation, in combination with the fifth aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type, and the processor is specifically configured to:

In a second possible implementation, in combination with the fifth aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type, and the processor specifically uses to:

Determining whether the resource includes a child corresponding to a semantic model of the Ontology type Resource

The transmitter is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiver is further configured to: receive a resource request message resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The processor is further configured to: obtain the resource from the resource set according to the URI information of the resource, and determine whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type, and if so, the acquiring The URI of the child resource;

The sender is configured to send a URI of the sub-resource to the device.

In a third possible implementation, in combination with the second possible implementation manners of the fifth aspect to the fifth aspect, the receiver is further configured to: receive a registration request message of the device, where the registration request message includes Raw device description information of the device;

The processor is further configured to: obtain a semantic model of a DeviceType type corresponding to the original device description information according to the original device description information of the device; and abstract the device into a resource corresponding to a semantic model of a DeviceType type, and Allocating a URI for the resource; determining, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of the Ontology type; if yes, acquiring a semantic model of the Ontology type corresponding to the original description information; The resource corresponding to the semantic model of the DeviceType type, and abstracting the device into a resource corresponding to the semantic model of the Ontology type.

In a sixth aspect, an embodiment of the present invention provides a device, where the device includes: a transmitter and a receiver;

The transmitter is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiver is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if Sub-resources abstract the legacy device for the CSE The semantic model of the sub-resource is a semantic model of the DeviceType type. If the sub-resource is abstracted by the CSE for the common device, the semantic model of the sub-resource is the semantic of the DeviceType type. The model and the semantic model of the Ontology type, the legacy device being a device supporting a semantic model of a DeviceType type, the device being a device supporting a semantic model of the DeviceType type and a semantic model of the Ontology type.

In a first possible implementation, in combination with the sixth aspect, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type, and the receiver is specifically configured to:

In a second possible implementation, in combination with the sixth aspect, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The receiver is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The transmitter is further configured to: resend a resource request message to the CSE, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiver is further configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

According to a seventh aspect, an embodiment of the present invention provides an M2M system, where the M2M system includes at least the CSE according to any one of the third aspect to the third aspect, and the fourth aspect to the The apparatus of any one of the second possible implementations of the fourth aspect; or the M2M system comprising at least the CSE of any one of the fifth aspect to the fifth aspect, the third possible implementation And the apparatus of any one of the second aspect to the second possible aspect of the sixth aspect.

The embodiment of the invention provides a resource access method, a related device and an M2M system. CSE abstracts legacy devices and obtains a semantic model of DeviceType type Corresponding resources, and record the semantic model information of each resource, abstract the common device, obtain the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, and record the semantic model information of each resource. When the device makes a resource request, the resource request message carries semantic model information and URI information of the resource. The common device corresponds to the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, so that the legacy device can access the resource obtained by the CSE abstracting the common device. Therefore, the problem that the legacy device in the prior art cannot access the resources obtained by abstracting the common device by the CSE is solved.

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 embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic diagram of an Internet of Things structure;

2 is a schematic diagram of a resource structure;

3 is a flow chart of a method for resource access;

4 is a schematic diagram of another resource structure;

FIG. 5 is a schematic diagram of another resource structure;

6 is a flow chart of another method for resource access;

7 is a flow chart of another method for resource access;

Figure 8 is a schematic view of a CSE;

Figure 9 is a schematic diagram of a device;

Figure 10 is another schematic diagram of CSE;

Figure 11 is a schematic diagram of another device.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. Based on an embodiment of the present invention, this All other embodiments obtained by a person of ordinary skill in the art without creative efforts are within the scope of the present invention.

Referring to FIG. 1, a schematic diagram of an Internet of Things structure is schematically illustrated. Devices such as device 1, device 2, device n, etc. are connected to a local IoT gateway, and a local IoT gateway is connected to other IoT gateways in the Internet of Things. .

In the prior art, the device 1, the device 2, the device n send a registration request message to the local IoT gateway when accessing the local IoT gateway, and the local IoT gateway abstracts the device and obtains the labeling by different semantic models. Semantic resources.

The existing devices of the Internet of Things application can be divided into two categories, one is a legacy device, and the other is a common device. The legacy device can provide less original device description information, and the original device description information provided by the common device is smaller. many. For example, suppose that device 1 in FIG. 1 is a legacy device, and device 2 is a common device. When device 1 sends a registration request message to a local IoT gateway, it carries some original device description information of device 1, such as device manufacturing. Information about the business information, device model information, and input/output (I/O) operations. When the device 2 sends a registration request message to the local IoT gateway, the original device description information can be provided more than the carrier information. In addition to the original device description information carried by the device 1, the original device description information, such as the connection relationship between the device 2 and other entities in the Internet of Things, can be provided.

The local IoT gateway abstracts the device 1 and the device 2 according to the original device description information of the device 1 and the original device description information of the device 2, respectively. Specifically, the oneM2M organization provides two types of semantic models according to the original device description information that the legacy device and the common device can provide, respectively, a semantic model of the DeviceType type and a semantic model of the Ontology type, for example, a DeviceType type. A detailed definition of the semantic model can be found in section 8.2.3 of the document entitled oneM2M-TR-0007-Study_on_Abstraction_and_Semantics_Enablement-V0_11_0 provided by the oneM2M organization.

The semantic model is equivalent to a template, and the original device description information of the device 1 is filled into a semantic model of the DeviceType type in a certain form, and the obtained resource may be referred to as a basic semantic resource, and other devices may access the basic semantic resource by accessing the basic semantic resource. Access Prepare 1. The original device description information of the device 2 is filled into the semantic model of the Ontology type in a certain form, and the obtained data may be referred to as an enhanced/complete semantic resource, and other devices may access the device 2 by accessing the enhanced/complete semantic resource. access.

It should be noted that in the field of the Internet of Things, all entities, such as Application Entity (AE), gateway, etc., and data, such as data obtained by filling the original device description information of the device 1 in the semantic model of the DeviceType type, etc. , can be called resources. Moreover, in the oneM2M system, each resource has a Uniform Resource Identifier (URI) corresponding to it.

FIG. 2 exemplarily describes a resource structure. It is assumed that the application entity shown in FIG. 2 is an air conditioner. The air conditioner is abstracted by the gateway to obtain three container resources, and each container resource includes at least one content instance resource.

It should be noted that the container resource is equivalent to a container, and the description of the device and the like are located in the content instance resource, and the content instance resource is a sub-resource of the container resource. Different container resources represent different categories. For example, container1 represents the content instance resource in container1. It is a description of the air conditioning control of air conditioner temperature control and humidity control. The content instance resource in container2 represents the running time of the air conditioner itself. Description of the working state, heat dissipation, etc., the sub-resource of the container, that is, the content instance resource contains specific descriptive information. For example, the content example 1 in the container 1 in FIG. 2 contains the air conditioning temperature control information, and the content instance in the container 2 It contains information on the humidity control of the air conditioner. When a device wants to monitor the temperature and humidity control of the air conditioner, it can control the temperature and humidity of the air conditioner by obtaining the information in the content instance 1 and the content instance 2 in the container1. Happening.

Assuming that the air conditioner is a legacy device, the content instance resource is a resource obtained by labeling data corresponding to the original device description information of the device by a semantic model of the DeviceType type. If the air conditioner is a common device, the content instance is The data obtained by labeling the data corresponding to the original device description information of the device by the semantic model of the Ontology type.

In the prior art, it is assumed that the device 3 is a legacy device, and the device wants to visit FIG. 2 The resource in the container1 of the application entity, the device 3 can obtain the URI of the container1, the device 3 initiates an access request to the local gateway, carries the URI of the container1, and the local gateway obtains the container1 according to the URI of the container1, and the container1 The URI of the content instance resource is sent to the device 3, and the device 3 accesses the content instance resource of the container1 according to the URI of the content instance resource.

However, if the application entity is a common device, the content instance resource shown in FIG. 2 is a resource obtained by labeling data corresponding to the original device description information of the device by a semantic model of the Ontology type, due to the Ontology type. The semantic model is a more advanced semantic model. The legacy device cannot access the resources corresponding to the semantic model of the Ontology type, and the legacy device cannot access the content instance resources of the ordinary device.

To solve this problem, an embodiment of the present invention provides a method for resource access. Referring to FIG. 3, the method includes:

301. The common service entity CSE receives a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource.

It should be noted that the general service entity may be the local IoT gateway shown in FIG. 1 or other devices, and the device may be the device 1, the device 2, the device n shown in FIG. Any device that is not shown in FIG. 1 is not limited to the specific embodiment of the present invention.

Specifically, the device may be a legacy device or a common device.

If the device is a legacy device, the device can only access the resource corresponding to the semantic model of the DeviceType type, and the semantic model information in the resource access request message is a semantic model of the DeviceType type, if the device is normal The device, if the device only accesses the resource marked by the semantic model of the Ontology type, then the semantic model information in the resource access request message is a semantic model of the Ontology type.

In the present invention, the CSE labels the semantic model of the container resource and the semantic model of the content instance resource in the resource structure shown in FIG. 2. For example, referring to FIG. 4, if the application entity is a legacy device, the CSE is recorded. The semantic model corresponding to the resource is a semantic model of the DeviceType type.

It should be noted that in Figure 4, only the semantic model of the container resource is marked. The child resource of the container, that is, the semantic model of the content instance resource can inherit the semantic model of the parent resource. At this time, the semantic model of the child resource and the parent The semantic model of the resource is the same. Of course, the semantic model of each content instance resource can also be labeled separately.

302. The CSE acquires the resource from a pre-stored resource set according to the URI information of the resource.

For example, the device requests to access the content instance resource in the container 1 in FIG. 4, where the URI is the URI of the container1, and the URI of the container1 can uniquely identify the container1 in the resource set of the CSE.

A plurality of resource structures shown in FIG. 4 are pre-stored in the CSE. For example, if the CSE is a home gateway, and 10 devices in the home are registered on the home gateway, the home gateway includes The 10 devices correspond to the abstracted resources shown in FIG. 4, and these resources are the resource sets.

303. The CSE determines, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic model of the sub-resource and a URI of the sub-resource. Corresponding relationship, if the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is an abstraction of the common device by the CSE In addition, the semantic model of the sub-resource is a semantic model of a DeviceType type, and a semantic model of an Ontology type, the legacy device is a device supporting a semantic model of a DeviceType type, and the common device is a semantic model supporting a DeviceType type. And the device of the Ontology type semantic model.

In the embodiment of the present invention, as shown in FIG. 1, when the device 1, the device 2, the device n registers with the universal service entity, if the device requesting registration is a legacy device, the CSE will request the registered device. The abstraction is performed to obtain the resource corresponding to the semantic model of the DeviceType type. If the device requesting registration is a common device, the CSE abstracts the device requesting the registration, and obtains a semantic model of the DeviceType type and a resource corresponding to the semantic model of the Ontology type. .

Specifically, if the device requesting registration is a legacy device, the CSE enters the device. After the abstraction, the resource structure shown in FIG. 4 is obtained. If the device is a normal device, the CSE abstracts the device to obtain a resource structure as shown in FIG. 5.

That is, the CSE not only abstracts the ordinary device into a resource corresponding to the semantic model of the DeviceType type, but also abstracts the ordinary device into a resource corresponding to the semantic model of the Ontology type.

Of course, FIG. 5 is only a possible implementation form. For example, it may be a semantic model corresponding to container1=DeviceType and Ontology, and container1 includes multiple content instance resources, and the semantic model of each content instance resource is separately labeled, such as 4 content instance resources, the first two corresponding semantic models = DeviceType, the last two corresponding semantic models = Ontology.

When the device that sends the resource access request to the CSE is a legacy device, the resource access request message carries the URI of the container resource that is requested to be accessed, and the carried semantic model information is a semantic model of the DeviceType type.

With reference to FIG. 5, if the device is a legacy device, and the device requests to access the container1 in the resource structure as shown in FIG. 5 obtained by abstracting the common device, the resource access request carries the URI of the container1. And the semantic model of the DeviceType type. After receiving the resource access request, the CSE obtains the container1 in the resource set through the URI of the container1, and determines whether there is a sub-resource corresponding to the semantic model of the DeviceType type in the container1.

And because the common device is simultaneously abstracted into a resource corresponding to a semantic model of the DeviceType type, and a resource corresponding to the semantic model of the Ontology type, and the CSE records a semantic model corresponding to each resource, so that the legacy device can Access resources acquired for common devices.

304. If yes, the CSE acquires a URI of the sub-resource and sends a URI of the sub-resource to the device.

With reference to FIG. 5, the CSE obtains the container1 according to the URI of the container1, and obtains the sub-resource corresponding to the semantic model of the DeviceType type in the container1 according to the semantic model of the DeviceType type carried in the resource access request message. The CSE obtains the URI of the child resource and the URI of the child resource Sending to the device, the device accessing the sub-resource according to the URI of the sub-resource.

Further, if the device that sends the resource access request is a common device, the semantic model information carried in the resource access request message is a semantic model of the Ontology type. For example, in conjunction with FIG. 4, the device requests access to the CSE. For the container1 resource in the resource obtained by abstracting the legacy device, the URI of the resource is the URI of the container1 in FIG. 4, and the CSE obtains the container1 according to the URI of the container1, but it is determined that the semantic of the Ontology type does not exist in the container1. The resource corresponding to the model, the CSE sends an indication message to the device, indicating that the resource access request of the device fails.

At this time, the device initiates the resource access request again, and carries the URI of the container1 and the semantic model of the DeviceType type. The CSE obtains the container1 according to the URI of the container1, and obtains the sub-resource corresponding to the semantic model of the DeviceType type of the container1. The URI of the resource is sent to the device, so that the device can access the resource obtained by the CSE to abstractly obtain the legacy device, and can also ensure that if the device accesses the resource obtained by the CSE abstracting the common device, The device can obtain the sub-resource corresponding to the semantic model of the Ontology type.

An embodiment of the present invention provides a resource access method, in which a general service entity abstracts a legacy device, obtains a resource corresponding to a semantic model of a DeviceType type, and records semantic model information of each resource, which is common. The device abstracts, obtains the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, and records the semantic model information of each resource. When the device makes a resource request, the resource request message carries semantic model information and URI information of the resource. The common device corresponds to the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, so that the legacy device can access the resource obtained by the CSE abstracting the common device.

With reference to FIG. 6, the embodiment of the present invention further provides a method for resource access, which is applied to an M2M system, and the method includes:

601. The CSE receives a registration request message of the device, where the registration request message includes original device description information of the device.

A device connected to the CSE needs to register on the CSE before initiating a resource request. The device's registration request message carries the original device description information of the device, and the ordinary device can provide richer original device description information than the legacy device.

602. The CSE acquires a semantic model of a DeviceType type corresponding to the original device description information according to the original device description information of the device.

Specifically, the CSE determines, according to the original description information of the device, whether a semantic model of the DeviceType type corresponding to the original description information is stored in the semantic model library stored by itself, and if not, the CSE will The registration request message is forwarded to the remote CSE, and the remote CSE includes all the semantic models. After the remote CSE matches the semantic model of the DeviceType type according to the original description information of the device, the URI of the semantic model is sent to the CSE. The CSE accesses the semantic model from a remote CSE according to a URI of the semantic model.

603. The CSE abstracts the device into a resource corresponding to a semantic model of a DeviceType type, and allocates a URI for the resource.

After acquiring the semantic model of the DeviceType type, the CSE fills the original description information of the device into the semantic model, obtains resources corresponding to the semantic model of the DeviceType type, and records semantic model information of each resource. .

604. The CSE determines, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type.

Further, the CSE determines, according to the original description information of the device, or the CSE, the remote CSE, according to the original description information of the device, whether it can be abstracted into a resource corresponding to the semantic model of the Ontology type.

It should be noted that if the device is a legacy device, the original description information of the device is less, and the CSE determines that the device cannot abstract the device into a resource corresponding to the semantic model of the Ontology type. If the device is a common device, the original description information of the device is more abundant than the legacy device, and the CSE judges that the device is abstracted into a resource corresponding to the semantic model of the Ontology type.

605. If yes, the CSE obtains a semantic model of the Ontology type corresponding to the original description information.

If the CSE determines that the device can be abstracted into a resource corresponding to the semantic model of the Ontology type according to the original description information of the device, the device is a common device, and the CSE obtains the original device description. The semantic model of the Ontology type corresponding to the information.

Specifically, the CSE determines, according to the original device description information of the device, whether a semantic model of the DeviceType type corresponding to the original device description information is stored in the semantic model library stored by the CSE, and if not, the CSE is The remote CSE requests the semantic model of the Ontology type corresponding to the original device description information of the device, and the remote CSE obtains the semantic model of the Ontology type corresponding to the original device description information according to the original device description information of the device. Sending the URI of the semantic model to the CSE, the CSE acquiring the semantic model of the Ontology type according to the URI of the semantic model of the Ontology type.

606. The CSE saves a resource corresponding to the semantic model of the DeviceType type, and abstracts the device into a resource corresponding to a semantic model of the Ontology type.

For a detailed technical feature of the embodiment of the present invention, reference may be made to the technical features of the embodiment corresponding to the foregoing FIG. 3, which is not repeatedly described in the embodiment of the present invention.

An embodiment of the present invention provides a resource access method, in which a CSE abstracts a legacy device into a resource corresponding to a semantic model of a DeviceType type, and abstracts the common device into a resource corresponding to a DeviceType type and an Ontology. The resources corresponding to the semantic model of the type, and record the semantic model information of each resource. Thereby, the legacy device can access the resources obtained by abstracting the common device by the CSE corresponding to the semantic model of the DeviceType type.

With reference to FIG. 7, an embodiment of the present invention further provides a method for resource access, which is applied to an M2M system, and the method includes:

701. The device sends a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and a uniform resource identifier URI of the resource. information.

702. The device receives a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if the sub-resource For the CSE to abstract the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the ordinary device, the sub-resource The semantic model of the resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device is a device supporting a semantic model of the DeviceType type and a semantic model of the Ontology type. .

Specifically, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the device receives the URI of the sub-resource corresponding to the semantic model of the DeviceType type sent by the CSE.

If the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type. Before the device receives the URI of the sub-resource of the resource, the device receives the indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails; the device re-directs to the CSE Sending a resource request message, the semantic model information included in the retransmitted resource request message is a semantic model of a Type of DeviceType, and URI information of the resource; the device receives a URI of a sub-resource of the resource, where The sub-resource is a sub-resource corresponding to the semantic model of the DeviceType type.

It should be noted that the detailed technical features of the embodiments of the present invention can be referred to the embodiments of the method corresponding to the foregoing FIG. 3 and FIG.

An embodiment of the present invention provides a resource access method, in which a general service entity abstracts a legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, abstracts the common device, and obtains a semantic model of the DeviceType type. Corresponding resources, and resources corresponding to the semantic model of the Ontology type, and recording semantic model information of each resource. When the device initiates resource access, the resource access request message carries the URI information of the resource and the semantic model information, and the CSE is based on the URI of the resource. Obtaining the resource, and acquiring the sub-resource corresponding to the semantic model information in the resource, so that the legacy device can access the resource obtained by the CSE to abstract the common device, and further, if the device is a common device, The resource requested by the device is obtained by abstraction of the legacy device by the CSE. If the device fails to access, the device initiates a resource access request again, and the semantic model corresponding to the semantic model information carried is a semantic model of the DeviceType type, so that the common device Ability to access resources that the CSE abstracts for legacy devices.

To solve the problem that the legacy device cannot access the resources corresponding to the common device, the embodiment of the present invention further provides a CSE, where the CSE includes: a receiving unit 801, a first obtaining unit 802, and a determining unit 803. Two obtaining unit 804 and sending unit 805;

The receiving unit 801 is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The first acquiring resource 802 is configured to obtain the resource from a pre-stored resource set according to the URI information of the resource;

The determining unit 803 is configured to determine, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic model of the sub-resource and the sub-resource Correspondence relationship of the URI, if the sub-resource is abstracted from the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, if the sub-resource is the CSE pair If the device is abstracted, the semantic model of the sub-resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device supports the DeviceType type. Semantic model and device of the Ontology type of semantic model;

The second obtaining unit 804 is configured to acquire a URI of the sub-resource;

The sending unit 805 is configured to send a URI of the sub-resource to the device.

Specifically, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the determining unit 803 is specifically configured to:

Specifically, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type, and the determining unit 803 is specifically configured to:

The sending unit 805 is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiving unit 801 is further configured to: receive a resource request message that is resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The first obtaining unit 802 is further configured to: obtain the resource from the resource set according to the URI information of the resource;

The determining unit 803 is further configured to: determine whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type;

The second obtaining unit 804 is further configured to: acquire a URI of the sub-resource;

The sending unit 805 is further configured to: send a URI of the sub-resource to the device.

Specifically, the CSE further includes a third obtaining unit 806 and an abstracting unit 807, where the receiving unit 801 is further configured to:

The third obtaining unit 806 is configured to acquire, according to the original device description information of the device, a semantic model of the DeviceType type corresponding to the original device description information;

The abstracting unit 807 is configured to abstract the device into a resource corresponding to a semantic model of a DeviceType type, and allocate a URI for the resource;

The determining unit 803 is further configured to: determine, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type;

The third obtaining unit 806 is configured to acquire a semantic model of the Ontology type corresponding to the original description information;

The abstracting unit 807 is further configured to: abstract the device as a resource corresponding to a semantic model of the Ontology type.

The embodiment of the present invention provides a CSE, which abstracts a legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, records the semantic model information of each resource, abstracts the common device, and obtains a DeviceType type. The resource corresponding to the semantic model and the resource corresponding to the semantic model of the Ontology type, and record the semantic model information of each resource. When the device makes a resource request, the resource request message carries semantic model information and URI information of the resource. The common device corresponds to the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, so that the legacy device can access the resource obtained by the CSE abstracting the common device.

In order to solve the problem that the legacy device cannot access the resources corresponding to the common device, the embodiment of the present invention further provides a device, and the device includes: a sending unit 901 and a receiving unit 902;

The sending unit 901 is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiving unit 902 is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if If the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, Said The semantic model of the sub-resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device is a semantic model supporting the DeviceType type and a semantic model of the Ontology type. device.

Specifically, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the receiving unit 902 is specifically configured to:

Specifically, if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The receiving unit 902 is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The sending unit 901 is further configured to: re-send a resource request message to the CSE, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiving unit 902 is specifically configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

An embodiment of the present invention provides a device, where a general service entity abstracts a legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, abstracts the common device, obtains a resource corresponding to a semantic model of the DeviceType type, and an Ontology type. a resource corresponding to the semantic model, and recording semantic model information of each resource. When the device initiates resource access, the resource access request message carries the URI information of the resource and the semantic model information, and the CSE acquires the resource according to the URI of the resource, and Acquiring the sub-resource corresponding to the semantic model information in the resource, so that the legacy device can access the resource obtained by the CSE to abstract the common device, and further, if the device is a common device, the device requests the accessed resource. If the CSE abstracts the legacy device, the device fails to access the device, and the device initiates the resource access request again. The semantic model corresponding to the semantic model information is DeviceType type. The semantic model enables ordinary devices to access the resources that the CSE abstracts for legacy devices.

To solve the problem that the legacy device cannot access the resources corresponding to the common device, in conjunction with FIG. 10, the embodiment of the present invention further provides a CSE, a receiver 1001, a processor 1002, a bus 1003, a memory 1004, and a transmitter 1005.

The receiver 1001 is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The processor 1002 acquires, by using the bus 1003, an instruction in the memory 1004, to obtain the resource from a pre-stored resource set according to the URI information of the resource;

If yes, the CSE obtains a URI of the sub-resource;

The sender 1005 is configured to send a URI of the sub-resource to the device.

Specifically, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the processor 1002 is specifically configured to:

Specifically, if the device is a common device, the semantic model information of the resource The corresponding semantic model is: a semantic model of the Ontology type, and the processor 1002 is specifically configured to:

The transmitter 1005 is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiver 1001 is further configured to: receive a resource request message that is resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The processor 1002 is further configured to: obtain the resource from the resource set according to the URI information of the resource, and determine whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type, and if yes, obtain The URI of the sub-resource;

The sender 1005 is configured to send a URI of the sub-resource to the device.

Specifically, the receiver 1001 is further configured to: receive a registration request message of the device, where the registration request message includes original device description information of the device;

The processor 1002 is further configured to: obtain a semantic model of a DeviceType type corresponding to the original device description information according to the original device description information of the device; and abstract the device into a resource corresponding to a semantic model of a DeviceType type, And assigning a URI to the resource; determining, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of the Ontology type; if yes, acquiring a semantic model of the Ontology type corresponding to the original description information; The resource corresponding to the semantic model of the DeviceType type is saved, and the device is abstracted into a resource corresponding to the semantic model of the Ontology type.

The embodiment of the present invention provides a CSE, which abstracts a legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, records the semantic model information of each resource, abstracts the common device, and obtains a DeviceType type. The resource corresponding to the semantic model and the resource corresponding to the semantic model of the Ontology type, and record the semantic model information of each resource. When the device makes a resource request, the resource request message carries semantic model information and URI information of the resource. Because the common equipment has The resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type enable the legacy device to access the resource obtained by the CSE abstracting the common device.

To solve the problem that the legacy device cannot access the resources corresponding to the common device, the embodiment of the present invention further provides a device, and the device includes: a transmitter 1101 and a receiver 1102;

The transmitter 1101 is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiver 1102 is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if If the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, The semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, the semantic model supporting the DeviceType type and the semantics of the Ontology type. Model of the device.

Specifically, if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the receiver 1102 is specifically configured to:

The receiver 1102 is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The transmitter 1101 is further configured to: resend a resource request message to the CSE, where The semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiver 1102 is further configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.

An embodiment of the present invention provides a device, where a general service entity abstracts a legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, abstracts the common device, obtains a resource corresponding to a semantic model of the DeviceType type, and an Ontology type. a resource corresponding to the semantic model, and recording semantic model information of each resource. When the device initiates resource access, the resource access request message carries the URI information of the resource and the semantic model information, and the CSE acquires the resource according to the URI of the resource, and Acquiring the sub-resource corresponding to the semantic model information in the resource, so that the legacy device can access the resource obtained by the CSE to abstract the common device, and further, if the device is a common device, the device requests the accessed resource. If the CSE abstracts the legacy device, the device fails to access the device, and the device initiates the resource access request again. The semantic model corresponding to the semantic model information is a DeviceType type semantic model, so that the common device can access the CSE to the legacy device. Abstraction .

To solve the problem that the legacy device cannot access the resources corresponding to the common device, the embodiment of the present invention further provides an M2M system, where the M2M system includes at least the CSE in the embodiment corresponding to FIG. 8, and FIG. The device in the corresponding embodiment; or the M2M system includes at least the CSE in the embodiment corresponding to FIG. 10, and the device in the embodiment corresponding to FIG.

An embodiment of the present invention provides an M2M system, where the M2M system includes a CSE and a device, and the CSE abstracts the legacy device, obtains a resource corresponding to a semantic model of the DeviceType type, and records semantic model information of each resource. The common device is abstracted, the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type are obtained, and the semantic model information of each resource is recorded. When the device makes a resource request, the resource request message carries a semantic model URI information for information and resources. The common device corresponds to the resource corresponding to the semantic model of the DeviceType type and the resource corresponding to the semantic model of the Ontology type, so that the legacy device can access the resource obtained by the CSE abstracting the common device.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

A method for resource access, the method being applicable to a machine-to-machine M2M system, characterized in that the method comprises:

The general service entity CSE receives the resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The CSE acquires the resource from a pre-stored resource set according to the URI information of the resource;

The CSE determines, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic relationship between the sub-resource and a URI of the sub-resource. If the sub-resource is abstracted from the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device The semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, and the common device is a semantic model and Ontology supporting a DeviceType type. Type of semantic model of the device;

If yes, the CSE acquires a URI of the sub-resource and sends a URI of the sub-resource to the device.
The method according to claim 1, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type;

The determining, by the CSE, whether the sub-resource corresponding to the semantic model information is included in the resource according to the semantic model information includes:

The CSE determines whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type.
The method according to claim 1, wherein if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The determining, by the CSE, whether the sub-resource corresponding to the semantic model information is included in the resource according to the semantic model information includes:

Determining, by the CSE, whether the resource includes a sub-resource corresponding to a semantic model of an Ontology type;

After the CSE determines, according to the semantic model information, whether the resource includes the sub-resource corresponding to the semantic model information, the method further includes:

If not, the CSE sends an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

Receiving, by the CSE, a resource request message resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The CSE acquires the resource from the resource set according to the URI information of the resource;

Determining, by the CSE, whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type;

If yes, the CSE acquires a URI of the sub-resource and sends a URI of the sub-resource to the device.
The method according to any one of claims 1-3, wherein before the CSE receives the resource request message sent by the device, the method further includes:

The CSE receives a registration request message of the device, where the registration request message includes original device description information of the device;

The CSE acquires a semantic model of the DeviceType type corresponding to the original device description information according to the original device description information of the device;

The CSE abstracts the device into a resource corresponding to a semantic model of a DeviceType type, and allocates a URI for the resource;

Determining, by the CSE, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type according to the original device description information;

If yes, the CSE acquires a semantic model of the Ontology type corresponding to the original description information;

The CSE saves resources corresponding to the semantic model of the DeviceType type, and abstracts the device into resources corresponding to the semantic model of the Ontology type.
A method for resource access, suitable for a machine-to-machine M2M system, characterized in that the method comprises:

The device sends a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The device receives a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if the sub-resource is If the CSE abstracts the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, the sub-resource The semantic model is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, which is a device supporting a semantic model of the DeviceType type and a semantic model of the Ontology type.
The method according to claim 5, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type;

The URI of the sub-resource of the device receiving the resource specifically includes:

The device receives a URI of the sub-resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
The method according to claim 5, wherein if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

Before the device receives the URI of the sub-resource of the resource, the method further includes:

Receiving, by the device, an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The device sends a resource request message to the CSE, and the semantic model information included in the retransmitted resource request message is a semantic model of the DeviceType type. And URI information of the resource;

The URI of the sub-resource of the device receiving the resource specifically includes:

The device receives a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
A general service entity CSE, the CSE includes: a receiving unit, a first acquiring unit, a determining unit, a second obtaining unit, and a sending unit;

The receiving unit is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The first acquiring resource, configured to acquire the resource from a pre-stored resource set according to the URI information of the resource;

The determining unit is configured to determine, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a semantic model of the sub-resource and the sub-resource Corresponding relationship of the URI, if the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, if the sub-resource is the CSE-to-common device For abstraction, the semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, and the common device supports a DeviceType type. a semantic model and a device of the Ontology type semantic model;

The second obtaining unit is configured to acquire a URI of the sub-resource;

The sending unit is configured to send a URI of the sub-resource to the device.
The CSE according to claim 8, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the determining unit is specifically configured to:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type.
The CSE according to claim 8, wherein if the device is a general device, the semantic model corresponding to the semantic model information of the resource is: The semantic model of the Ontology type, the judging unit is specifically used to:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the Ontology type;

The sending unit is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiving unit is further configured to: receive a resource request message that is resent by the device, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The first obtaining unit is further configured to: obtain the resource from the resource set according to the URI information of the resource;

The determining unit is further configured to: determine whether the resource includes a sub-resource corresponding to a semantic model of a DeviceType type;

The second obtaining unit is further configured to: acquire a URI of the sub-resource;

The sending unit is further configured to: send a URI of the sub-resource to the device.
The CSE according to any one of claims 8 to 10, wherein the CSE further comprises a third obtaining unit and an abstracting unit, the receiving unit is further configured to:

Receiving a registration request message of the device, where the registration request message includes original device description information of the device;

The third acquiring unit is configured to acquire, according to the original device description information of the device, a semantic model of the DeviceType type corresponding to the original device description information;

The abstracting unit is configured to abstract the device into a resource corresponding to a semantic model of a DeviceType type, and allocate a URI for the resource;

The determining unit is further configured to: determine, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of an Ontology type;

The third obtaining unit is configured to acquire a semantic model of the Ontology type corresponding to the original description information;

The abstracting unit is further configured to: abstract the device as a resource corresponding to a semantic model of the Ontology type.
An apparatus, comprising: a sending unit and a receiving order yuan;

The sending unit is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiving unit is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if The child resource is abstracted from the CSE for the legacy device, and the semantic model of the child resource is a semantic model of the DeviceType type. If the child resource is abstracted by the CSE for the common device, the The semantic model of the sub-resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device is a semantic model supporting the DeviceType type and a semantic model of the Ontology type. device of.
The device according to claim 12, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the receiving unit is specifically configured to:

Receiving a URI of the sub-resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
The device according to claim 12, wherein if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The receiving unit is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The sending unit is further configured to: resend a resource request message to the CSE, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiving unit is specifically configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
A general service entity CSE, characterized in that the CSE includes: Receiver, processor, bus, memory and transmitter;

The receiver is configured to receive a resource request message sent by the device, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

And the processor acquires, by using the bus, an instruction in the memory, to obtain the resource from a pre-stored resource set according to the URI information of the resource;

Determining, according to the semantic model information, whether the resource includes a sub-resource corresponding to the semantic model information, where the resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if If the sub-resource is abstracted by the CSE for the legacy device, the semantic model of the sub-resource is a semantic model of the DeviceType type, and if the sub-resource is abstracted by the CSE for the common device, The semantic model of the sub-resource is a semantic model of a DeviceType type and a semantic model of an Ontology type, and the legacy device is a device supporting a semantic model of a DeviceType type, the semantic model supporting the DeviceType type and the semantics of the Ontology type. Model device

If yes, the CSE obtains a URI of the sub-resource;

The sender is configured to send a URI of the sub-resource to the device.
The CSE according to claim 15, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of a DeviceType type, and the processor is specifically configured to:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type.
The CSE according to claim 15, wherein if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type, and the processor is specifically configured to:

Determining whether the resource includes a sub-resource corresponding to a semantic model of the Ontology type;

The transmitter is further configured to: send an indication message to the device, where the indication message is used to indicate that the resource access request of the device fails;

The receiver is further configured to: receive a resource request message resent by the device, where The semantic model information included in the retransmitted resource request message is a semantic model of the DeviceType type, and URI information of the resource;

The processor is further configured to: obtain the resource from the resource set according to the URI information of the resource, and determine whether the resource includes a sub-resource corresponding to a semantic model of the DeviceType type, and if so, the acquiring The URI of the child resource;

The sender is configured to send a URI of the sub-resource to the device.
The CSE according to any one of claims 15-17, wherein the receiver is further configured to: receive a registration request message of the device, where the registration request message includes original device description information of the device. ;

The processor is further configured to: obtain a semantic model of a DeviceType type corresponding to the original device description information according to the original device description information of the device; and abstract the device into a resource corresponding to a semantic model of a DeviceType type, and Allocating a URI for the resource; determining, according to the original device description information, whether the device is abstracted into a resource corresponding to a semantic model of the Ontology type; if yes, acquiring a semantic model of the Ontology type corresponding to the original description information; The resource corresponding to the semantic model of the DeviceType type, and abstracting the device into a resource corresponding to the semantic model of the Ontology type.
An apparatus, comprising: a transmitter and a receiver;

The transmitter is configured to send a resource request message to the universal service entity CSE, where the resource request message includes semantic model information and uniform resource identifier URI information of the resource;

The receiver is configured to receive a URI of a sub-resource of the resource, where the CSE pre-stored resource set includes a correspondence between a semantic model of the sub-resource and a URI of the sub-resource, if The child resource is abstracted from the CSE for the legacy device, and the semantic model of the child resource is a semantic model of the DeviceType type. If the child resource is abstracted by the CSE for the common device, the The semantic model of the sub-resource is a semantic model of the DeviceType type and a semantic model of the Ontology type, and the legacy device is a device supporting a semantic model of the DeviceType type, and the common device is a semantic model supporting the DeviceType type and an Ontology type. Semantic model of the device.
The device according to claim 19, wherein if the device is a legacy device, the semantic model corresponding to the semantic model information is: a semantic model of the DeviceType type, and the receiver is specifically configured to:

Receiving a URI of the sub-resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
The device according to claim 19, wherein if the device is a common device, the semantic model corresponding to the semantic model information of the resource is: a semantic model of the Ontology type;

The receiver is further configured to: receive an indication message sent by the CSE, where the indication message is used to indicate that the resource access request of the device fails;

The transmitter is further configured to: resend a resource request message to the CSE, where the semantic model information included in the retransmitted resource request message is a semantic model of a DeviceType type, and URI information of the resource;

The receiver is further configured to: receive a URI of a sub-resource of the resource, where the sub-resource is a sub-resource corresponding to a semantic model of a DeviceType type.
A machine-to-machine M2M system, characterized in that the M2M system comprises at least the universal service entity CSE according to any one of claims 8 to 11, and as in claims 12-claim 14 Any of the devices described; or

The general service entity comprises at least the CSE according to any one of claims 15 to 18, and the device according to any one of claims 19 to 21.