Guiding principles for the construction of TD-SCDMA indoor coverage projects: The construction process of the TD-SCDMA indoor distribution system of Guangdong Mobile Communications Co., Ltd. adopts a turnkey engineering model by the system integrator. Each municipal company is responsible for the feasibility study of the project, the preliminary coordination and negotiation with the owner (site selection), the establishment of the project, the review of the design plan, the construction management, and the organization of the completion acceptance of the project. The system integrator is responsible for the design and construction of the indoor distribution project. The system integrator for the construction of the indoor distribution system project is determined by the provincial branch company through bidding. Each municipal branch company must examine and select from the shortlist determined by the provincial company\'s bidding. (The construction adopts the form of unified negotiation and separate signing, that is, the provincial company determines the shortlisted system integrator and signs a framework contract. The municipal company will then compete among the shortlisted system integrators according to their respective conditions) and shall not entrust other manufacturers. 1. Necessity of survey The purpose of the indoor coverage survey is to investigate and understand the surrounding environment and signal conditions of the target coverage point, so as to determine the coverage depth and adoption method of the project. Surveying is a crucial part of indoor coverage projects. The quality of this work directly affects the success or failure of the entire project. Therefore, the surveying work must be well considered and detailed, and a complete and detailed survey report must be provided to facilitate the subsequent work. The survey is divided into two stages: primary survey and secondary survey. The primary survey is the responsibility of each city\'s mobile company, and a site selection suggestion sheet must be issued after the survey; the secondary survey is the responsibility of each system integrator, and a detailed survey report must be issued after the survey. 2. Preparation work before survey 1) Understand the network environment, user group type, social status, and consumption behavior of the target area covered by the construction party; 2) Request the owner to obtain the floor plan, elevation, and related terrain and structural information of the building to be surveyed. If the owner is ultimately unable to provide it, the surveyor must draw a detailed floor plan, elevation, or section; 3) Before the on-site survey, carefully study the drawings of the building to be surveyed and clarify the building structure from the drawings. 4) Contact the construction party to preliminarily determine the transmission method and the possible location of the microcell (or macrocell, repeater) as the signal source. 5) Clarify the coverage requirements, such as coverage range and coverage level. 3. Required tools and documents Test mobile phone or receiver (or other test instruments) approved by the construction party Laptop (test analysis software) Compass, GPS Floor plan of the building to be measured Digital camera (record the building\'s appearance) Map of the city Tape measure or rangefinder 4. Survey project description: In this principle, buildings are defined as low-rise, middle-rise, high-rise, and super-high-rise. 1 to 7 floors are low-rise, 8 to 21 floors are middle-rise, 22 to 39 floors are high-rise, and 40 floors and above are super-high-rise.
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