PHY Frame Channel Bonding for 60 GHz Throughput
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Solution Overview
Problem
Existing 60 GHz band communication technologies, such as the 802.15.3c standard, are limited to single-channel transmission and do not support multiple-input and multiple-output (MIMO) communication, restricting throughput in close-proximity communication scenarios.
Innovation Solution
The proposed solution involves generating a physical layer (PHY) frame with a PHY preamble, frame header, and payload field, and performing channel bonding across multiple channels to enhance throughput, using a low-complexity PHY and omitting MIMO communication, with specific fields repeated according to the number of bonded channels to maintain reception time and improve data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-channel transmission is used as in 802.15.3c standard, then device complexity is reduced, but throughput is limited
Solution Approach 1:
The patent combines multiple channels (e.g., 2x2 MIMO, 4x4 MIMO) to create a bonded channel system that achieves higher throughput. Multiple transmit antennas and receive antennas are merged to work together as a unified communication system, allowing simultaneous data transmission across multiple spatial paths.
Solution Approach 2:
The patent segments the communication channel into multiple independent channels that can be individually processed and then combined. Each antenna pair operates as a separate channel with its own modulation and coding, allowing parallel processing and subsequent combination to achieve higher overall throughput.
2Productivity
If channel bonding on multiple channels is implemented, then throughput is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal PHY frame structure that can adapt to different bonding configurations (2x2, 4x4 MIMO, single-channel). The frame includes flexible fields such as the Number of Spatial Streams (NSS) indicator and Bonded Channel Indicator that can represent multiple channel configurations, allowing the same frame format to serve multiple purposes.
Solution Approach 2:
The patent uses parameter indicators within the frame structure (such as NSS, NCBP, NCS fields) to dynamically change the operational parameters based on the actual bonding configuration. These parameters allow the receiver to adapt its processing to match the transmitted channel configuration without requiring different frame formats.
3Productivity
If MIMO communication is used, then throughput is enhanced, but reception time increases
Solution Approach 1:
The patent includes preliminary indication fields (NSS, NCBP, NCS) in the PHY header that inform the receiver in advance about the bonding configuration and channel parameters. This allows the receiver to prepare its processing logic before actually receiving the data payload, reducing processing delays.
Solution Approach 2:
The patent uses periodic frame structures with consistent preamble and header formats that allow the receiver to synchronize and predict the incoming signal pattern. The regular structure of SYNC fields, SFD fields, and repeating patterns enables efficient timing recovery and reduces reception time.
Data Source
AI summary
A method and apparatus for close-proximity communication. The close-proximity communication method performed by a transmitter includes generating a physical layer (PHY) frame including a PHY preamble, a frame header, and a payload field, and transmitting the generated PHY frame to a receiver, in which the frame header may include a media access control (MAC) header, a header check sequence (HCS), and a Reed-Solomon (RS) parity bit.