Space Division Multiplexing User Grouping by Isolation Calculation
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Solution Overview
Problem
Current mobile communication systems fail to effectively realize space division multiplexing, as existing methods for interference suppression between users are unreliable and dependent on beamforming algorithms, which are prone to errors and do not ensure accurate performance, especially in downlink scenarios.
Innovation Solution
A method and apparatus for space division multiplexing that involves acquiring space information, calculating space division isolation between users, generating user groups based on this isolation, and allocating physical resources to selected groups, using techniques such as beamforming weight coefficient calculation, power spectrum analysis, and direction of arrival estimation to ensure accurate interference suppression and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming techniques are used to suppress interference between users, then space division multiplexing can be implemented, but the interference suppression performance is unreliable and accuracy cannot be ensured
Solution Approach 1:
The patent calculates space division isolation between users in advance before resource allocation. By pre-computing the isolation values based on channel state information, the system can reliably determine which users can share the same resource without interference, ensuring both reliability and accuracy of space division multiplexing.
Solution Approach 2:
The patent uses channel state information feedback from users to calculate space division isolation. The base station receives feedback about the channel conditions, processes this information to compute isolation values, and uses these to make informed resource allocation decisions, thereby ensuring accurate and reliable multiplexing performance.
2Power
If downlink beamforming is used to transmit signals, then signal power to desired users is increased, but error introduction affects multiplexing accuracy
Solution Approach 1:
The patent introduces space division isolation as an intermediary parameter that mediates between signal power enhancement and multiplexing accuracy. By calculating this isolation value as an intermediate step before resource allocation, the system can account for beamforming errors and still achieve accurate multiplexing despite the power enhancement effects.
3Productivity
If radio spectrum resources are allocated without considering space division isolation, then resource allocation is simple, but spectrum utilization efficiency is low
Solution Approach 1:
The patent performs the complex space division isolation calculation as a preliminary action before resource allocation. By pre-computing isolation values for all user pairs, the system simplifies the subsequent resource allocation process to a matter of matching users based on pre-calculated isolation values, thereby achieving high spectrum utilization without excessive complexity.
Data Source
AI summary
A method for realizing space division multiplexing is provided. The method comprises steps as follows: A. acquiring space information of users, and calculating space division isolation between the users based on the acquired space information; B. generating a set of user groups for the space division multiplexing based on the space division isolation between users calculated in step A; C. selecting a user group from the set of user groups for the space division multiplexing generated in step B and allocating the same physical resource to two users among the selected user group when conducting the space division multiplexing. An apparatus for realizing space division multiplexing is further provided. Using said method and apparatus, the space division isolation can be realized reasonably with accuracy.