PICO-RRU-BASED NETWORK IMPLEMENTATION FOR FACILITATING 6LOWPAN DATA ACCESS

摘要

A scheme for providing access to 6LoWPAN data in a Pico-Remote Radio Unit (PRRU)-based wireless access network. In one embodiment, the PRRU network comprises a Baseband Unit (BBU) coupled to one or more remote Radio Hub (RHUB) elements via a first set of CPRI links, each RHUB element in turn coupled to one or more PRRU elements via corresponding second sets of CPRI links. The BBU element comprises an interface for communicating 6LoWPAN data to and from a router coupled to an IPv6 network. The BBU element also includes a bridging functionality operative to determine endpoint PRRU elements' addresses and corresponding RHUB elements' addresses by querying an address mapping database.

主权项

1. A method operating in a Pico-Remote Radio Unit (RRU)-based radio access system (PRAS) for providing radio access with respect to information in Internet Protocol (IP) version 6 (IPv6) over Low Power Wireless Personal Area Network (6LoWPAN) format, the method comprising:
receiving, at a Baseband Unit (BBU) element, 6LoWPAN data (“6LO data”) packets from a router coupled to an IPv6 network; examining a destination IP address of the 6LO data packets and determining an address of at least one pico remote radio unit (PRRU) element to which the 6LO data packets are to be delivered; determining an address of a remote radio hub (RHUB) element corresponding to the at least one PRRU element; repackaging the 6LO data packets in a format specified for a control/management (C/M) channel associated with a first communication link disposed between the BBU and RHUB elements and operable with Common Public Radio Interface (CPRI) protocol; transmitting the repackaged 6LO data packets to the RHUB element in a first CPRI C/M message via the first communication link operable with CPRI protocol, the CPRI C/M message including the address of the PRRU element; unpacking, at the RHUB element, the first CPRI C/M message received from the BBU element and obtaining the at least one PRRU element's address to which the 6LO data packets are to be delivered; and repackaging the 6LO data packets in a second CPRI C/M message and transmitting the second CPRI C/M message to the at least one PRRU element via a second communication link operable with CPRI protocol.