Abstract
Three options are popular today for design of wireless networks - Point-to-Point, Point-to-Multipoint and Mesh topologies. Worldwide interoperability of microwave access (WiMAX) is most often associated with the point-to-multipoint (PMP) topology. For some requirements, the configuration of the base stations (BSs) is aimed to be as mesh. Mesh offers a combination of point-to-point and point-to-multipoint capability by having each of the base station able to communicate with other base stations. This averts the base station element in the standard, besides the process flow across relevant interfaces. The paper proposes a Distributed Data Path Function (DDPF) that allows peers/network elements to exchange data traffic between meshed base stations where WiMAX doesn't allow this. The proposed solution is layer-3 and includes the design of a routing table for a mesh configuration of cell-site (radio base station) routers with a base station controller. Some changes are needed which will be explored throughout the paper promoted with figures to illustrate the idea.
Highlights
WiMAX (Worldwide Interoperability for Microwave Access) based on IEEE 802.16 standards is a Wireless Metropolitan Area Network (WMAN) which supports point to multi-point Broadband Wireless Access (BWA) (WiMAX ForumTM, 2009), Fig. 1 shows the WiMAX network architecture
Mesh offers a combination of point-to-point and pointto-multipoint capability by having each of the base station able to communicate with other base station (IEEE Standard, 2015)
One of Data Path Function (DPF) responsibility is Generic Routing Encapsulation GRE-tunneling of the backhaul traffic from the Access Service Network Gateway (ASN GW) in downlink towards the Base Stations (BSs) and the Mobile Stations (MNs)/wireless devices
Summary
WiMAX (Worldwide Interoperability for Microwave Access) based on IEEE 802.16 standards is a Wireless Metropolitan Area Network (WMAN) which supports point to multi-point Broadband Wireless Access (BWA) (WiMAX ForumTM, 2009), Fig. 1 shows the WiMAX network architecture. The IEEE wireless standard has a range of up to 30 miles and offers wireless access at lower cost with higher bandwidth (WiMAX Forum, 2009). It can afford transmission speed of up to 75 megabits per second. Mesh offers a combination of point-to-point and pointto-multipoint capability by having each of the base station able to communicate with other base station (IEEE Standard, 2015). This protects the base station element in the standard, besides the process flow across relevant interfaces. The intension of this work is to have a function that allows peers/network elements to exchange data traffic where the wireless standard doesn’t allow this
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