This paper introduces a new handoff method, known as the anchor radio system (RS) method, for the personal access communications system (PACS). This technique facilitates the inter-RS and inter-switch handovers. This method of handover relies on a new RS-to-RS interface, named the inter-RS interface (IRI). This paper describes the use of the IRI protocol among PACS based RSs. This anchor RS method for handoff provides a simple yet effective solution without adding new requirements to the existing network infrastructures.
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