Technical Report Number
Robust Header Compression (ROHC) provides for more efﬁcient use of radio links for wireless communication in a packet switched network. Due to its potential advantages in the wireless access area andthe proliferation of network processors in access infrastructure, there exists a need to understand the resource requirements and architectural implications of implementing ROHC in this environment. We presentan analysis of the primary functional blocks of ROHC and extract the architectural implications on next-generation network processor design for wireless access. The discussion focuses on memory space andbandwidth dimensioning as well as processing resource budgets. We conclude with an examination of resource consumption and potential performance gains achievable by ofﬂoading computationally intensiveROHC functions to application speciﬁc hardware assists. We explore the design tradeoffs for hardware as-sists in the form of reconﬁgurable hardware, Application-Speciﬁc Instruction-set Processors (ASIPs), andApplication-Speciﬁc Integrated Circuits (ASICs).
Taylor, David E.; Herkersdorf, Andreas; and Dittmann, Gero, "Robust Header Compression (ROHC) in Next-Generation Network Processors" Report Number: WUCSE-2004-70 (2004). All Computer Science and Engineering Research.