Abstract
Heterogeneous wireless networks based on varieties of radio access technologies (RATs) and standards will coexist in the future. In order to exploit this potential multiaccess gain, it is required that different RATs are managed in a cooperative fashion. This paper proposes two advanced functional architecture supporting the functionalities of interworking between WiMAX and 3GPP networks as a specific case: Radio Control Server- (RCS-) and Access Point- (AP-) based centralized architectures. The key technologies supporting the interworking are then investigated, including proposing the Generic Link Layer (GLL) and researching the multiradio resource management (MRRM) mechanisms. This paper elaborates on these topics, and the corresponding solutions are proposed with preliminary results.
Highlights
In the near future, multitude of wireless communication network based on a variety of radio access technologies (RATs) and standards will emerge and coexist
The brief idea of the scheme is described as follow: the source packets will be firstly coded at generic link layer for the enhanced capability of error correction, the coded packets are allocated over different radio accesses (RAs) according to the specified selection algorithm, in order to minimizing the probability of irrecoverable loss at receiver side
When combining with the results of packet loss rate, we can conclude that the Multiradio Transmission Diversity (MRTD)-PFEC performs well especially when the channel states of the available RAs are in a bad condition as well
Summary
Multitude of wireless communication network based on a variety of radio access technologies (RATs) and standards will emerge and coexist. (In other papers, the MRRM item may be replaced by Joint Radio Resource Management (JRRM) and Common Radio Resource Management sometimes.) The aim of introducing MRRM is to efficiently use the radio resources in a multiaccess network, it is important to provide optimum radio resource management functionalities between the different RATs in the RAN. In the following, these aforementioned issues will be elaborated, respectively.
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