Time-Sensitive Wireless Communication with Bridge Delay Configuration
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Solution Overview
Problem
Existing wireless communications networks struggle to support time-sensitive communication due to shared network resources, delays, and jitters, which are not adequately addressed by existing protocols like 3GPP TR 23.734 and US20120314597A1.
Innovation Solution
The method involves UE capability information exchange, including bridge identification, bandwidth, processing delay, and propagation delay, to accurately configure time-sensitive data streams in wireless communications networks, using IEEE 802.1Qcc for user and network configuration, and determining bridge delays and capabilities to ensure nanosecond-level precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If time-sensitive data streams are transmitted over shared wireless network resources, then network resource sharing is enabled, but transmission delays and jitters occur that prevent time-sensitive communication
Solution Approach 1:
The patent applies preliminary action by having the talker send Stream Reservation Protocol (SRP) messages in advance to reserve transmission resources before actual data transmission occurs. The listener also performs preliminary actions by sending SRP Advertise messages to indicate bandwidth availability. This reservation mechanism ensures that when time-sensitive data needs to be transmitted, dedicated resources are already allocated, preventing delays and jitters caused by shared network resources.
2Reliability
If Stream Reservation Protocol is used to reserve transmission resources, then time-sensitive data transmission is enabled, but existing 3GPP protocols do not adequately support the required nanosecond-level precision
Solution Approach 1:
The patent applies parameter changes by modifying the SRP protocol parameters to achieve nanosecond-level precision. Specifically, it introduces bridge delay parameters (first bridge delay and second bridge delay) that account for processing delays at network elements like gNodeBs and UEs. The protocol also uses timing advance values and adjusts transmission time window parameters to compensate for wireless transmission variations, enabling precise time-sensitive communication while adapting existing protocol frameworks rather than creating entirely new systems.
3Measurement precision
If bridge delay information is exchanged between UE and network, then accurate time-sensitive configuration is achieved, but additional capability information exchange is required
Solution Approach 1:
The patent applies feedback by implementing a bidirectional capability information exchange mechanism. The UE sends capability information to the network, and the network responds with configuration information including bridge delay values. This feedback loop allows both sides to adjust their timing parameters based on actual measured delays, improving measurement precision while distributing the complexity of information exchange across multiple standardized protocol messages rather than requiring a single complex negotiation.
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AI summary
Some embodiments of this disclosure provide a method for supporting time-sensitive communication and a communications device. The method for supporting time-sensitive communication applied to a first communications device includes: transmitting first information and/or second information; where the first information includes at least one of the following: first capability information of a terminal UE and information related to a delay between the UE and a radio access network RAN network element; and the second information includes at least one of the following: a type of the UE, a type of time-sensitive networking, and indication information of whether time-sensitive data stream configuration information is required.