Now showing items 1-6 of 6

    • Adaptive location management in mobile environments 

      MAJUMDAR, RK; RAMAMRITHAM, K; XIONG, M (SPRINGER-VERLAG BERLIN, 2003)
      Location management in mobile environments consists of two major operations: location update and paging. The more up-to-date the location information, the less paging becomes necessary and vice versa. The conventional ...
    • Deriving deadlines and periods for real-time update transactions 

      XIONG, M; RAMAMRITHAM, K (IEEE COMPUTER SOC, 2004)
      Typically, temporal validity of real-time data is maintained by periodic update transactions. In this paper, we examine the problem of period and deadline assignment for these update transactions such that 1) these ...
    • MIRROR: a state-conscious concurrency control protocol for replicated real-time databases 

      XIONG, M; RAMAMRITHAM, K; HARITSA, JR; STANKOVIC, JA (PERGAMON-ELSEVIER SCIENCE LTD, 2002)
      Data replication can help database systems meet the stringent temporal constraints of current real-time applications, especially Web-based directory and electronic commerce services. A prerequisite for realizing the benefits ...
    • Mutual consistency in real-time databases 

      JHA, AK; XIONG, M; RAMAMRITHAM, K (IEEE COMPUTER SOC, 2006)
      A real-time database is composed of real-time objects whose values remain valid only within their validity intervals. Each object in the database models a real world entity. The freshness of these objects is maintained by ...
    • Schedulability Analysis of Deferrable Scheduling Algorithms for Maintaining Real-Time Data Freshness 

      HAN, S; CHEN, DJ; XIONG, M; LAM, KY; MOK, AK; RAMAMRITHAM, K (IEEE COMPUTER SOC, 2014)
      Although the deferrable scheduling algorithm for fixed priority transactions (DS-FP) has been shown to provide a better performance compared with the More-Less (ML) method, there is still a lack of any comprehensive studies ...
    • Scheduling transactions with temporal constraints: Exploiting data semantics 

      XIONG, M; RAMAMRITHAM, K; STANKOVIC, JA; TOWSLEY, D; SIVASANKARAN, R (IEEE COMPUTER SOC, 2002)
      In this paper, issues involved in the design of a real-time database which maintains data temporal consistency are discussed. The concept of data-deadline is introduced and time cognizant transaction scheduling policies ...