Wireless Fronthaul Relay Multiplexing Local Remote Data
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Solution Overview
Problem
The increasing demand for mobile broadband access in wireless communication systems, particularly in 5G networks, necessitates improvements in new radio (NR) technology to support diverse services like eMBB, mmW, mMTC, and URLLC, while facing challenges such as limited wireless range and high deployment costs due to the need for dense gNB deployment and wired backhaul connections.
Innovation Solution
Implementing wireless relaying between gNBs to create an integrated access backhaul (IAB) network, where gNBs act as relays to forward data wirelessly until a wired connection is reached, reducing the need for costly wired connections and enabling coverage in previously inaccessible areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If dense gNB deployment is implemented to meet increasing mobile broadband demand, then network coverage and capacity are improved, but construction costs and deployment complexity increase
Solution Approach 1:
The patent replaces the mechanical/wired backhaul connection system with a wireless communication system. gNBs use wireless interfaces to connect to the core network instead of requiring physical wired connections, thereby reducing construction costs while maintaining network coverage and capacity.
2Reliability
If wired backhaul connections are used to connect gNBs to the core network, then connection reliability is improved, but deployment flexibility and coverage in inaccessible areas deteriorate
Solution Approach 1:
The patent substitutes wired mechanical connections with wireless electromagnetic communication. This allows gNBs to be deployed in previously inaccessible areas without requiring physical cable infrastructure, while maintaining reliable connections through wireless protocols and error correction mechanisms.
3Ease of manufacture
If wireless relaying is implemented between gNBs, then deployment cost is reduced, but data transmission complexity increases
Solution Approach 1:
The patent introduces relay gNBs as intermediary nodes in the wireless communication path. These relay nodes simplify the overall system architecture by providing intermediate wireless connectivity, reducing the need for direct long-range wireless connections or extensive wired infrastructure, thereby lowering deployment costs while managing transmission complexity through standardized protocols.
Data Source
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AI summary
Certain aspects of the present disclosure relate to methods and apparatus for communicating remote and local data in a wireless fronthaul of a wireless communication system. The method includes terminating a lower portion of a radio bearer for the UE, wherein the radio bearer comprises an upper portion and a lower portion. The method further includes forwarding the upper portion of the radio bearer for the UE to a network node over a wireless link. The method further includes carrying a lower portion of a second radio bearer with the BS and a multiplexing layer indicating whether the lower portion of the second radio bearer includes an upper portion of the second radio bearer corresponding to local data or a tunnel with the upper portion of the radio bearer for the UE corresponding to remote data.