STA Antenna Group Segmentation for OBSS Collision Reduction
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Solution Overview
Problem
In wireless local area networks (WLANs) with multiple antennas, the overlapping basic service sets (OBSS) environment leads to increased collisions and performance deterioration due to simultaneous transmissions on the same channel, resulting in reduced transmission efficiency and network throughput, along with service delays.
Innovation Solution
A method and apparatus for managing data communication between stations (STAs) and access points (APs) by identifying and utilizing resources based on the capabilities of STAs, including multiple antennas, base-band processing units, and modems, to prevent collisions and optimize channel usage, allowing for communication with adjacent APs using idle or underutilized antennas and processing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple STAs and APs use the same channel in OBSS environment, then network coverage and connectivity are improved, but collision probability and interference increase leading to performance deterioration
Solution Approach 1:
The patent segments the antenna resources at each STA into multiple antenna groups, where each group can independently communicate with different APs. This segmentation allows simultaneous transmissions on the same channel without collisions, as each antenna group operates independently. The channel is divided into multiple sub-channels corresponding to different antenna groups, enabling parallel communication paths.
Solution Approach 2:
The patent introduces a new dimension for resource allocation by utilizing multiple antenna groups at the STA side. Instead of competing for the same channel in a single dimension, STAs can transmit data through different antenna groups simultaneously, effectively adding a spatial dimension to the communication resource allocation. This resolves the collision problem by providing additional transmission paths.
2Ease of operation
If contention-based MAC protocol is used for channel access, then ease of operation and network simplicity are maintained, but collision occurs when multiple signals are transmitted simultaneously
Solution Approach 1:
The patent dynamically allocates antenna groups to different APs based on real-time communication needs and channel conditions. The STA can flexibly switch between different antenna groups for different transmissions, allowing adaptive resource utilization. This dynamic approach maintains the simplicity of contention-based access while improving throughput by reducing collisions through intelligent antenna group selection.
Solution Approach 2:
The patent changes the parameter of antenna group configuration to resolve collisions. By varying which antenna group is used for each transmission based on the target AP and channel conditions, the system maintains ease of operation while improving productivity. The antenna group parameter is adjusted dynamically to optimize performance without complicating the MAC protocol.
3Quantity of substance
If density of STAs and APs increases to meet growing data traffic demand, then network capacity and coverage are improved, but collision probability and service delays increase
Solution Approach 1:
The patent segments communication resources into multiple antenna groups, allowing STAs to simultaneously communicate with multiple APs through different groups. This segmentation reduces service delays by providing parallel transmission paths, preventing the need to wait for channel availability when multiple STAs are present in the network.
Solution Approach 2:
The patent enables continuous data transmission by maintaining multiple active antenna groups that can operate simultaneously. Instead of idle periods caused by collisions or channel contention, the system maintains continuous useful action through parallel transmissions on different antenna groups, reducing service delays even as network density increases.
Data Source
AI summary
The present disclosure relates to 5th generation (5G) or pre-5G communication systems to support a higher data rate than the long term evolution (LTE) or other 4th generation (4G) communication systems. A method for transmitting data in a communication system is provided. The method includes identifying, by a station (STA) communicating with a first access point (AP), a resource for performing communication with a second AP positioned adjacent to the STA based on information regarding a capability of the STA, performing the communication with the second AP using the resource, and transmitting data obtained by performing the communication with the second AP to the first AP. The information regarding the capability includes one of information regarding multiple antennas available on the STA, information regarding a base-band processing unit including the multiple antennas, or information regarding a modem including the multiple antennas and the base-band processing unit.