Template Frame Resource Allocation in UDNs
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Solution Overview
Problem
In Ultra-Dense Networks (UDNs), existing resource allocation techniques are inefficient due to high access-node densities and interference issues, particularly with directive beamforming, where informing access nodes about resource usage and reservations is non-trivial, and procedures like CSMA/CA are inefficient.
Innovation Solution
A method for allocating communication resources in UDNs, where each access node receives allocation information for its links and adjusts resource allocation based on the status of its data buffers, allowing efficient allocation of resources to routes with data and reassigning or sharing resources for routes without data, using template frames to indicate available, shared, and prohibited resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If CSMA/CA procedures are used for resource allocation, then access nodes can operate autonomously, but resource allocation efficiency deteriorates due to interference and beamforming in UDNs
Solution Approach 1:
The patent implements preliminary action by having access nodes transmit template frames in advance that contain allocation information for multiple routes. This allows nodes to prepare resource allocation decisions before actual data transmission, enabling more efficient resource distribution in UDNs while maintaining autonomous operation. The template frames are transmitted periodically or on-demand to ensure allocation information is ready when needed.
Solution Approach 2:
The patent employs feedback mechanisms where access nodes receive allocation information from template frames and adjust their resource allocation decisions based on current network conditions and buffer status. This feedback loop enables continuous optimization of resource allocation efficiency while preserving the autonomous operation capability of each access node.
2Measurement precision
If allocation information is transmitted to all access nodes, then resource allocation accuracy improves, but network overhead increases
Solution Approach 1:
The patent applies local quality by tailoring the allocation information content to match the specific needs of each access node. Template frames include allocation information relevant to particular routes and links based on local buffer status and network conditions. This ensures high allocation accuracy for each node while minimizing unnecessary information transmission, thereby reducing overall network overhead.
Solution Approach 2:
The patent implements partial action by transmitting allocation information only when and where needed. Template frames are sent periodically or triggered by specific events such as buffer status changes, rather than continuously. This selective information transmission maintains accurate resource allocation decisions while significantly reducing network overhead compared to constant transmission.
3Device complexity
If resource allocation is static, then allocation simplicity is maintained, but adaptability to changing network conditions deteriorates
Solution Approach 1:
The patent implements dynamics by making resource allocation adaptive rather than static. Template frames contain allocation information that is updated based on current network conditions, buffer status, and channel conditions. Access nodes dynamically adjust their resource allocation decisions by receiving updated template frames, enabling the system to adapt to changing conditions while maintaining relatively simple allocation procedures through the template frame mechanism.
Data Source
AI summary
The present disclosure generally relates to the field of resource allocation. More specifically, the present disclosure relates to a technique of allocating communication resources in a wireless communication network. The wireless communication network comprises a plurality of access nodes, each of the plurality of access nodes being connected to one or more of the plurality of access nodes via one or more links to provide a plurality of routes for routing data through the wireless communication network. A method embodiment comprises the step of receiving, for one or more links (180, 182) of at least one access node (100) of the plurality of access nodes, allocation information. The allocation information indicates how available communication resources are to be allocated. The method comprises allocating, for the one or more links (180, 182) of the at least one access node (100), the available communication resources based on the received allocation information and a status of one or more data buffers of the at least one access node (100) for buffering data related to one or more of the plurality of routes.