Logical Channel Resource Allocation Modes for D2D Communication
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Solution Overview
Problem
Current device-to-device (D2D) communication modes are inflexible, leading to high signaling resource consumption and inadequate quality of service (QoS) for some services, as all logical channels in a terminal are configured to use either a centralized or distributed resource allocation mode, but not both simultaneously.
Innovation Solution
Configuring different resource allocation modes at a logical channel granularity, allowing each logical channel to use either a centralized or distributed resource allocation mode independently, thereby reducing signaling resource consumption and meeting high QoS requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a centralized resource allocation mode is used for all logical channels, then QoS requirements can be satisfied, but signaling resource consumption increases
Solution Approach 1:
The patent segments the resource allocation mode configuration from terminal-level to logical channel-level. Each logical channel can be independently configured with either centralized or distributed resource allocation mode, allowing fine-grained control over signaling consumption while maintaining QoS where needed.
Solution Approach 2:
Different resource allocation modes are applied to different logical channels based on their specific QoS requirements. Critical channels with high QoS demands use centralized allocation, while non-critical channels use distributed allocation to reduce signaling overhead.
2Quantity of substance
If a distributed resource allocation mode is used for all logical channels, then signaling resource consumption is reduced, but QoS requirements cannot be satisfied
Solution Approach 1:
The patent divides the logical channels into different groups that can be configured with different resource allocation modes. This segmentation allows the system to minimize signaling consumption overall while ensuring that specific channels with high QoS requirements receive adequate network coordination.
Solution Approach 2:
The system applies distributed resource allocation to logical channels where QoS requirements are less stringent, thereby reducing signaling resource consumption. Simultaneously, centralized allocation is applied to channels requiring high reliability, achieving local optimization for each channel type.
3Device complexity
If a single resource allocation mode is configured for a terminal, then configuration simplicity is maintained, but resource allocation flexibility is insufficient
Solution Approach 1:
The patent introduces a segmentation mechanism where resource allocation modes are configured per logical channel rather than for the entire terminal. This is managed through a configuration module that handles multiple channel configurations, providing flexibility without significantly increasing terminal complexity.
Solution Approach 2:
The system dynamically selects appropriate resource allocation modes for different logical channels based on service requirements. The configuration can be adjusted per channel type, enabling the terminal to adapt to diverse service demands while maintaining a unified configuration management framework.
Data Source
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AI summary
Embodiments of the present invention provide a data transmission method and apparatus, and relate to the communications field. The method includes: obtaining configuration information; establishing at least one logical channel according to an identifier of each logical channel and the corresponding transmission mode indication that are in the configuration information; obtaining a transmission resource according to the transmission mode indication of a logical channel to which device-to-device (D2D) buffered data belongs; and sending the D2D buffered data by using the obtained transmission resource, where a logical channel having a first transmission mode indication uses a centralized resource allocation mode, and a logical channel having a second transmission mode indication uses a distributed resource allocation mode. According to the embodiments of the present invention, a problem that a resource allocation mode used by a terminal during D2D communication is relatively single and is not flexible enough is resolved, and the terminal can use different resource allocation modes according to a logical channel granularity, so that not only consumption of signaling resources of a network device can be reduced, but also QoS requirements of some services that require relatively high quality of service (QoS) can be satisfied.