Map Message Resource Allocation for Full-Duplex Stations
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Solution Overview
Problem
Existing wireless network technologies face challenges in efficiently allocating uplink resources to both half-duplex and full-duplex mobile stations, particularly in Frequency Division Duplexing systems, where half-duplex stations can only transmit or receive at different times, while full-duplex stations can do so simultaneously, leading to inefficiencies and difficulties in resource management.
Innovation Solution
The method involves transmitting a Map message in a downlink region to allocate resources in both uplink regions, with the use of dummy information elements to indicate resource allocations, allowing full-duplex stations to identify their resource locations across multiple groups and frames, enabling efficient simultaneous transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resource allocation messages are sent separately for each uplink region to half-duplex stations, then resource allocation accuracy is improved, but signaling overhead increases and power efficiency deteriorates
Solution Approach 1:
The patent combines resource allocation information for multiple uplink regions into a single Map message. The base station sends one consolidated Map message that contains resource allocation details for both first and second uplink regions, eliminating the need for separate messages and reducing signaling overhead while maintaining accurate resource allocation for half-duplex stations.
Solution Approach 2:
The Map message is designed to serve multiple functions simultaneously: it allocates resources for both uplink regions to half-duplex stations while also providing dummy information elements that enable full-duplex stations to identify their resource locations. This universal message structure reduces overall signaling requirements in the network.
2Loss of information
If dummy information elements are added to Map messages, then full-duplex station resource identification is improved, but message complexity increases
Solution Approach 1:
Dummy information elements act as intermediaries in the Map message structure. These elements do not allocate actual resources to half-duplex stations but serve as placeholders that help full-duplex stations identify their resource locations. The dummy elements bridge the communication between the base station's resource allocation decisions and the full-duplex stations' need to locate their assigned resources.
Solution Approach 2:
The Map message is segmented into distinct functional parts: actual resource allocation information for half-duplex stations and dummy information elements for full-duplex stations. This segmentation allows each part to serve its specific purpose without interfering with the other, maintaining clear structure while providing comprehensive resource identification for both station types.
3Device complexity
If half-duplex and full-duplex stations use the same resource allocation mechanism, then system simplicity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies different information elements within the same Map message structure to accommodate different station types. Half-duplex stations receive actual resource allocation information for specific uplink regions, while full-duplex stations use dummy information elements to identify their resources. This local differentiation within a unified message structure maintains system simplicity while optimizing resource utilization for each station type's specific capabilities.
Data Source
AI summary
Various example embodiments are disclosed herein. According to an example embodiment, an apparatus may include a controller, and a wireless transmitter coupled to the controller, the wireless transmitter configured to the wireless transmitter configured to transmit a Map message as part of a first group downlink (DL) region, the Map message allocating, to a full-duplex (FD) mobile station (MS), a first resource in a first group UL region and a second resource in a second group UL region. The transmitter may also be configured to transmit a dummy information element (IE), for example, as part of a second group DL region, the dummy information element (IE) reflecting at least the allocating to the FD MS of the second resource in the second group UL region.