Beam Refinement Protocol Packet Transmission Format for Multi-Channel Wireless Networks
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Solution Overview
Problem
Current beam refinement protocols in IEEE 802.11ad networks face inefficiencies in multi-channel and multi-antenna transmission, particularly in channel aggregation mode, where beam training and tracking are hindered by unequal channel bandwidth allocation and antenna polarization limitations.
Innovation Solution
The method involves determining a transmission format for beam refinement protocol packets based on the quantity of transmit chains, antenna type, and channel transmission mode, allowing for flexible allocation of transmit chains across channels and decoupling the number of transmit chains for data and training fields, thereby aligning packet lengths and improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the BRP packet is expanded to support multi-channel and multi-antenna transmission, then beam training and tracking efficiency is improved, but packet complexity and processing requirements increase
Solution Approach 1:
The patent segments the TRN field into multiple TRN subfields, where each subfield corresponds to a specific transmit chain or antenna. This segmentation allows the BRP packet to support multi-channel and multi-antenna transmission by distributing training sequences across different subfields, enabling efficient beam training while maintaining manageable packet structure through organized division of training resources.
2Ease of manufacture
If transmit chains are allocated equally across channels, then implementation is simplified, but channel resource utilization is suboptimal when channels have different bandwidths
Solution Approach 1:
The patent applies local quality by allocating different quantities of transmit chains to different channels based on their individual characteristics, particularly their bandwidth. Channels with larger bandwidths receive more transmit chains, while channels with smaller bandwidths receive fewer transmit chains. This non-uniform allocation optimizes channel resource utilization by matching transmit chain resources to actual channel capacity, improving overall system throughput.
3Device complexity
If the number of transmit chains for data and training fields is coupled, then packet structure is simplified, but transmission efficiency is reduced when different fields require different chain configurations
Solution Approach 1:
The patent introduces dynamic configuration by decoupling the number of transmit chains for data fields from those for training fields. This allows independent optimization of transmit chain allocation for each field type based on their specific requirements. The data field can use more transmit chains for high-rate data transmission, while the training field uses an appropriate number for effective beam training, with each configuration optimized independently for its function.
Data Source
AI summary
Example methods and devices for sending a beam refinement protocol packet are provided in this application, which support a transmission format of multi-channel transmission and multi-antenna transmission. One example method for sending a beam refinement protocol packet includes determining a transmission format of a beam training (TRN) subfield by a first device based on first information. The first information includes information indicating a quantity of transmit chains used for transmitting the TRN subfield on each channel and information indicating a channel aggregation mode. The first device sends a beam refinement protocol packet to a second device on a transmit chain based on the transmission format, where the beam refinement protocol packet includes a data field and a TRN field, and the TRN field includes a plurality of TRN subfields.