BWP Configuration for Simultaneous Uplink and Sidelink Communication
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Solution Overview
Problem
In wireless communications, existing systems face challenges in configuring Bandwidth Parts (BWPs) to enable simultaneous communication on both uplink and sidelink carriers, particularly for terminal devices with limited radio frequency capabilities, which restricts their ability to send and receive data on multiple BWPs simultaneously.
Innovation Solution
A method and apparatus that configures a set of BWPs for terminal devices, establishing an association between uplink and sidelink BWPs, allowing them to communicate on both simultaneously by reporting their radio frequency bandwidth capabilities to the network device, which then allocates and configures the BWPs to ensure the terminal device can handle the combined bandwidth requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal device is configured to communicate on both uplink and sidelink carriers simultaneously, then communication flexibility and data transmission efficiency are improved, but the device complexity and radio frequency capability requirements increase
Solution Approach 1:
The patent segments the bandwidth into multiple Bandwidth Parts (BWPs), where a first BWP is allocated for uplink communication with the base station and a second BWP is allocated for sidelink communication with other terminal devices. This segmentation allows the terminal device to handle simultaneous uplink and sidelink communications by dividing the radio frequency resources into manageable, non-overlapping segments, thereby reducing the complexity of managing full-duplex radio frequency capabilities.
2Adaptability or versatility
If the terminal device supports simultaneous transmission on multiple BWPs with different numerologies, then service requirements in diverse environments are met, but the device complexity increases
Solution Approach 1:
The patent applies local quality by configuring different numerologies (subcarrier spacings, cyclic prefix lengths) specifically for each BWP based on the communication requirements. The first BWP uses numerology optimized for uplink control and data transmission, while the second BWP uses numerology optimized for sidelink communication. This localized optimization allows the terminal device to meet diverse service requirements without needing to support all possible numerology combinations simultaneously, thereby reducing overall device complexity.
3Reliability
If the terminal device reports radio frequency bandwidth capability to the network device, then appropriate BWP configuration is achieved, but the configuration complexity increases
Solution Approach 1:
The patent implements preliminary action by having the terminal device report its radio frequency bandwidth capability to the network device before actual communication begins. The network device uses this reported capability information to pre-configure appropriate BWPs and assign them to the terminal device. This preliminary configuration ensures that the terminal device receives suitable BWP assignments matched to its capabilities, while the configuration complexity is managed centrally by the network device rather than requiring complex device-side configuration logic.
Data Source
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Figure 1c~2
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AI summary
Embodiments of this application provide a communications method and apparatus. The method includes: receiving, by a first terminal device, first information sent by a network device, where the first information is used to configure a BWP set; the BWP set includes a first BWP and a second BWP; and the first BWP is used for communication between the first terminal device and the network device, and the second BWP is used for communication between the first terminal device and a second terminal device; and communicating, by the first terminal device, on at least one first BWP and/or at least one second BWP in the BWP set. The foregoing method provides a BWP configuration idea and method, so that the first terminal device can communicate on the first BWP and the second BWP at the same time.