2RX Wireless Device 100 MHz Bandwidth Conditions
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Solution Overview
Problem
Current wireless communication systems with two receive antennas (2RX) are limited to a 20 MHz bandwidth, which is insufficient for meeting the data rate and latency requirements of extended reality (XR) traffic, while systems with four receive antennas (4RX) are hardware-intensive and not feasible for devices like AR glasses at low frequency bands.
Innovation Solution
Implementing form factor and feature conditions for 2RX devices to enable communication over a 100 MHz bandwidth, including antenna placement volume/area/size thresholds, TDP limits, absence of carrier aggregation, and maximum rank and QoS flow thresholds, to balance hardware complexity and quality of service (QoS) for XR traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If 2RX devices use 20 MHz bandwidth, then hardware complexity is reduced, but data rate and latency requirements for XR traffic cannot be met
Solution Approach 1:
The patent changes the bandwidth parameter from 20 MHz to 100 MHz for 2RX devices, enabling higher data rates while maintaining the two-antenna configuration. This parameter change allows 2RX devices to meet XR traffic requirements without increasing antenna count, thus resolving the contradiction between hardware complexity and data rate.
2Productivity
If 4RX configuration is used, then data rate requirements are met, but hardware complexity and device size increase making it infeasible for AR glasses
Solution Approach 1:
The patent changes the bandwidth parameter from 20 MHz to 100 MHz while maintaining the 2RX configuration, providing an alternative to the 4RX approach. This resolves the contradiction by achieving high data rates through bandwidth expansion rather than antenna multiplication, making the system feasible for compact devices like AR glasses.
3Device complexity
If 2RX devices are enabled for 100 MHz bandwidth, then hardware complexity is reduced, but network performance and QoS may be compromised
Solution Approach 1:
The patent implements dynamic configuration where 2RX devices can operate on 100 MHz bandwidth with specific conditions (no carrier aggregation, rank limitations). The network can dynamically adjust resource allocation and communication parameters based on device capability indicators, maintaining network performance while supporting reduced-hardware devices.
Solution Approach 2:
The patent introduces condition-based parameter changes where communication parameters (bandwidth, carrier aggregation, rank) are adjusted based on device form factor and capability. This allows 2RX devices to use 100 MHz bandwidth under controlled conditions, resolving the contradiction between reduced hardware complexity and maintained network performance.
Data Source
AI summary
A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE receives an allocation of resources on a communication bandwidth of 100 MHz for communication with a network entity; and communicates, using two receive antennas and the communication bandwidth, with the network entity, based on meeting a condition comprising at least one of a form factor condition of an apparatus comprising the UE or a feature condition for the communication with the network entity.