Dynamic Bandwidth Reservation in Wireless Transmission
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Solution Overview
Problem
Current wireless telecommunications systems, particularly those based on IEEE 802.11ac, face limitations in efficiently utilizing available bandwidth during transmission opportunities due to restricted channel reservation rules, leading to suboptimal spectral efficiency and performance.
Innovation Solution
A method where a wireless communication apparatus acquires a transmission period on a primary frequency band and requests additional frequency bands from other apparatuses, monitoring for availability and sending reservation messages to increase the transmission bandwidth dynamically during the transmission period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission apparatus uses a primary channel for channel contention and TXOP acquisition, then channel access reliability is improved, but bandwidth utilization is limited and spectral efficiency deteriorates
Solution Approach 1:
The channel reservation mechanism is segmented into multiple independent reservation requests, each targeting a specific secondary channel. The transmission apparatus can independently reserve multiple secondary channels while maintaining a single primary channel for TXOP acquisition, thereby segmenting the bandwidth expansion function from the channel access function.
Solution Approach 2:
The patent extends the channel reservation from a single-dimensional primary channel to a multi-dimensional frequency spectrum by adding secondary channels. This dimensional expansion allows the system to acquire additional bandwidth resources in the frequency domain while maintaining the original time-domain TXOP structure.
2Productivity
If the transmission apparatus requests additional frequency bands during transmission period, then bandwidth utilization is improved, but communication protocol complexity increases
Solution Approach 1:
The transmission apparatus sends reservation requests for secondary channels at the beginning of the transmission period, before actual data transmission. This preliminary reservation action allows the system to secure additional bandwidth resources in advance, avoiding complex real-time bandwidth negotiation during data transmission.
Solution Approach 2:
The patent introduces dynamic bandwidth adjustment by allowing the transmission apparatus to flexibly request and acquire different numbers of secondary channels based on actual transmission needs. The bandwidth is not fixed but can be dynamically expanded within the transmission period, making the protocol adaptable to varying data rates and traffic conditions.
3Reliability
If the system follows strict channelization rules for 802.11ac radios, then standard compliance is improved, but spectral efficiency and performance are suboptimal
Solution Approach 1:
The transmission apparatus autonomously manages its own bandwidth expansion by independently sending reservation requests to other apparatuses for secondary channels. This self-service mechanism allows the system to exceed standard channelization rules while maintaining protocol compatibility, as each apparatus independently negotiates and reserves channels without requiring centralized control or standard modification.
Data Source
AI summary
A method, apparatus, and computer program for acquiring transmission resources during a transmission period is provided. A first communication apparatus is arranged to utilize at least one other communication apparatus to reserve at least one additional transmission band for the first communication apparatus during the transmission period of the first communication apparatus. Upon reception of a message indicating availability of additional transmission band(s) from the at least one other communication apparatus, the first communication apparatus is configured to increase its transmission band during the transmission period.