Order matters: transmission reordering in wireless networks

Modern wireless interfaces support a physical layer capability called Message in Message (MIM). Briefly, MIM allows a receiver to disengage from an ongoing reception, and engage onto a stronger incoming signal. Links that otherwise conflict with each other, can be made concurrent with MIM. However, the concurrency is not immediate, and can be achieved only if conflicting links begin transmission in a specific order. The importance of link order is new in wireless research, motivating MIM-aware revisions to link scheduling protocols. This paper identifies the opportunity in MIM-aware reordering, characterizes the optimal improvement in throughput, and designs a link layer protocol to achieve it. Testbed results confirm the performance gains of the proposed system. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Centralized Networks, Wireless communication; C.2.5 [Local and Wide-Area Networks]: Access schemes General Terms Algorithms, Design, Experiment...

• Type: Conference
• Year: 2009
• Where: MOBICOM
• Authors: Justin Manweiler, Naveen Santhapuri, Souvik Sen, Romit Roy Choudhury, Srihari Nelakuditi, Kamesh Munagala
• Keywords: Communications, MOBICOM 2009, Modern Wireless Interfaces, Physical Layer Capability, Stronger Incoming Signal