Pico-RRU 6LoWPAN Data Access via Control Channel Repackaging
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Solution Overview
Problem
Integrating 6LoWPAN-compliant low-power devices with external IP networks, especially in IoT or IoE architectures, poses challenges due to constraints in memory, processing resources, and power consumption, making it difficult to implement advanced IPv6-based services.
Innovation Solution
The system facilitates 6LoWPAN data access by receiving packets from a router, examining destination IP addresses, repackaging them as control channel messages, and transmitting them through Ethernet cabling or CPRI protocol-based links between Radio Units (RUs) and Radio Dots (RDs), enabling seamless integration with cellular radio communications networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 6LoWPAN-compliant low-power devices are integrated with external IP networks, then IoT/IoE services can be provided, but the devices face constraints in memory, processing resources, and power consumption
Solution Approach 1:
The patent introduces an intermediary system comprising a Radio Unit (RU) and Radio Dot (RD) elements that act as mediators between 6LoWPAN devices and external IP networks. The RU receives 6LoWPAN data packets, repackages them as control channel messages over Ethernet cables, and transmits them to RD elements, which then deliver the data to the target 6LoWPAN devices. This intermediary architecture allows low-power devices to access IP networks without requiring them to have full IP stack functionality, thereby reducing their power consumption and resource requirements while maintaining integration capability.
2Ease of operation
If 6LoWPAN data packets are transmitted directly to low-power devices, then data access is simple, but the network cannot leverage existing Ethernet infrastructure
Solution Approach 1:
The patent implements a universal communication system where the RU-RD Ethernet infrastructure serves multiple functions: it carries both traditional cellular control channel messages and 6LoWPAN data packets. The bridging function module in the RU enables the same Ethernet cable infrastructure to transport both types of traffic by repackaging 6LoWPAN packets as control channel messages. This multi-functional approach allows the network to leverage existing Ethernet infrastructure for both cellular operations and IoT data access without requiring separate dedicated networks.
3Reliability
If a separate dedicated sensor network is deployed for IoT services, then 6LoWPAN data access is guaranteed, but network complexity and cost increase
Solution Approach 1:
The patent merges the cellular network infrastructure with 6LoWPAN network requirements by combining the RU-RD Ethernet infrastructure with the existing control channel messaging system. Instead of deploying a separate dedicated sensor network, the system integrates 6LoWPAN data access into the existing cellular network architecture. The bridging function module combines 6LoWPAN packet handling with control channel message processing, allowing a single unified infrastructure to provide both cellular services and reliable 6LoWPAN data access, thereby reducing overall network complexity and cost.
Data Source
AI summary
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.