Due to the delay in commercialization of 3G, people are increasingly concerned about WiMAX. It attracts not only the "eyeball", but also the investment of the company and the support of the government. To be precise, WiMAX is just a forum for the name of Worldinteroperabilityformicrowave acess, which actively promotes the IEEE 802.16 series of standards and related specifications, and these standards and specifications contain many more related to 3G. Application technology for communication technology updates. More intuitively, WiMAX may provide users with better communication services.
2. Organization and related standards of WiMAXThe IEEE 802.16 standard series has so far included seven standards of 802.16, 802.16a, 802.16c, 802.16d, 802.16e, 802.16f, and 802.16g, as shown in Table 1. Among them, 802.16, 802.16a, and 802.16d belong to the fixed wireless access air interface standard, and 802.16e belongs to the mobile broadband wireless access air standard.
Founded on April 9, 2001, the WiMAX Forum is a non-profit organization that conducts conformance and interoperability certification for broadband wireless access products based on the IEEE802.16 standard and the ETSIHiperMAN standard. WiMAX-certified products. Will have the "WiMAX® CERTIFIED" logo.
Table 1802.16 series of standards
With the growing interest in the 802.16 family of standards, the growing number of members joining the WiMAX Forum has also led to the rapid development of the forum. The WiMAX Forum has established Certification Working Group (CWG), Technical Working Group (TWG), Spectrum Working Group (RWG), Market Working Group (MWG), Requirements Working Group (SPWG), Network Working Group (NWG) and Applied Research Group (AWG). The following is a brief introduction to the responsibilities of each working group.
(1) Certification Working Group (CWG)
The main objectives of the working group are: to manage the certification process, including conformance testing procedures, interoperability procedures, and certification processes, as well as the establishment of certification laboratories and quality monitoring.
(2) Technical Working Group (TWG)
The main objectives of the Technical Working Group are to establish and maintain specifications for conformance and interoperability based on international standards, while defining technical specification requirements for the system.
(3) Spectrum Working Group (RWG)
The main objectives of the Spectrum Working Group are to find and identify licensed bands for WiMAX products, and to encourage the use of globally uniform frequency bandwidths to maximize the use of frequency resources while reducing the cost of manufacturing products.
(4) Market Working Group (MWG)
The main work of the market working group is to promote the development of WiMAXForum, establish world-class broadband wireless access consistency and interconnection standards, and determine the market positioning of WiMAX products to promote the development of broadband wireless access market.
(5) Requirements Working Group (SPWG)
The goal of the Requirements Working Group is to define system requirements for broadband wireless access systems to ensure that products meet current and future market development needs.
(6) Network Working Group (NWG)
The working scope of the network working group mainly focuses on: IEEE802.16 and the development of network elements, functional entities, messages and protocols outside the core network, and clearly define and describe the existing definitions and parts of the existing standards.
(7) Applied Research Working Group (AWG)
The main work of the application working group focuses on promoting the use of WiMAX products through various means, such as business concept testing and product testing, and promoting broadband wireless access users and markets by mining the "killer" application of WiMAX products. Development, while providing guidance for product development.
3. WiMAX related testsFrom the above description, WiMAX's relevant test specifications are developed by the Technical Working Group (TWG), and the Certification Working Group (CWG) is responsible for the management of specific operational certification tests. It should be emphasized that these tasks are all for fixed wireless access devices. The test for mobile wireless access devices can only be officially started after the IEEE802.16e standard is finalized.
3.1 Test related documents
The documents developed by the Technical Working Group are described below one by one:
(1) PICS (Protocol Implementation Consistency Description)
PICS (protocolimplementaTIonconformancestatement) provides a mechanism for device manufacturers to demonstrate the degree of conformance of devices to the MAC/PHY protocol of the IEEE 802.16-2004 specification in a standardized manner. This document applies to bands below 11 GHz, IEEE Wireless MANOFDM and ETSI HiperMAN for PMP topologies. PICS files are mainly divided into two parts: subscriber station (SS) and base station (BS).
(2) TSS&TP (test set structure and test purpose)
Uv Air Purifier,Air Purifier With Uv Light,Uvc Air Purifier,Uv Air Cleaner
CIXI KYFEN ELECTRONICS CO.,LTD, , https://www.kyfengroup.com