## 3 The Conceptual Framework Proposed
### Analyzing the Real-Use Environments and Implementing Living Labs
#### 3.2.4 Living Lab Components  
After the three sets of real-use environments of a product are analyzed and their primary elements are identified, the next step is to embody the elements from the viewpoint of living lab design or configuration. This involves contemplating how each of the key elements that makes up a product's real-use environments can be implemented in living labs. In other words, it is to materialize the components of living labs to reflect the real-use environments of the product. Below is a specific example explaining the process.  
Suppose that a new test method has been developed for a floor noise level meter that is installed in an apartment to measure floor-level noise. The test method for the noise measurement performance of the new product is to use an omni-directional speaker that generates noise against the product and then check how well the product measures the noise. The reason for the verification of this test method is that it does not consider the characteristics of the real-use environments of the product. Since this product is installed on the floor or ceiling of an apartment, the actual use environment is different from that of a portable noise meter. Therefore, a test method considering the positions of the noise measurement sensors may be more appropriate. For example, when installed on the ceiling, the test method should measure the noise passing through the floor from upstairs, and related threshold values should be determined depending on the materials of the floor (e.g., concretes, hardwoods).  
Given this background, the actual use environments of the product can be analyzed using the frameworks of this study. Firstly, according to the framework shown in Figure 1, the floor noise level meter is classified as a product that people indirectly use (see also Figure 4). So, the key elements of the real-use environment in terms of the user context include a user's location, activity, and others around the user (See Figure 1). Then, at the stage of eliciting living lab components, those elements of the real-use context of the product can be embodied in the following concrete forms: living rooms or bedrooms (user location), resting or talking (user activity), friends or family (others around the user).  
Next, in the aspect of the technological context of product use, multiple sensors, network devices and servers are the primary real-world components that should be considered in designing living labs (see Figure 2). This is because the noise meter is a product that works as a system with other products and peripheral devices.  
Finally, the framework in Figure 3 suggests that the noise meter is used indoors, especially at an apartment that can be understood as a normal environment. Thus, living labs should be implemented  
Figure 3: The Framework for the Context Analysis of a Product (Physical Context).  
similarly to an ordinary apartment. This makes it clear how to design the living labs in the aspects of artificial environments, such as indoor structure, furnishings, and social events. Importantly, since the sensors for noise measurement is attached or inserted into the floor or ceiling of the building, the actual materials and thickness of the floor should be considered when setting up an apartment-like space in living labs. Social events, like a family gathering, are another consideration to emulate the real-use context of the product. On the contrary, there is no particular need to consider special conditions in terms of the natural environmental aspects. In sum, by deriving the key real-world components of the product use in this way, it is possible to prepare, in advance, for the implementation of living labs, for the verification of the test methods and criteria.