Wireless Communication Packet Discarding for Resource Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, delay-sensitive traffics such as extended reality and cloud gaming pose challenges due to packet delay budgets, leading to wasted radio resources and increased energy consumption when packets exceed maximum transmission delays.
Innovation Solution
A method where data packets that fail to meet delay requirements are discarded, releasing transmission resources for other data transmissions, thereby enhancing system capacity and reducing user equipment power consumption, applicable to both Uu and PC5 air interfaces, and extendable to terminal-base station and relay-base station communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packets are transmitted through the wireless network regardless of delay status, then transmission continuity is maintained, but radio resources are wasted and UE energy consumption increases
Solution Approach 1:
The patent applies preliminary action by checking the packet delay budget status before transmission occurs. The network determines in advance whether a packet will expire before its scheduled transmission time, and only packets that will not expire are selected for transmission. This prevents wasting radio resources and UE energy on packets that would definitely be discarded anyway.
Solution Approach 2:
The patent changes the parameter of packet selection criteria from traditional continuous transmission to delay-aware selection. By introducing the packet delay budget parameter and comparing it with estimated transmission time, the system dynamically adjusts which packets are transmitted, thereby avoiding energy waste on expired packets while maintaining reliable transmission for valid packets.
2Productivity
If packets are transmitted through the wireless network regardless of delay status, then transmission resources are utilized, but system capacity is reduced due to wasted radio resources
Solution Approach 1:
The patent changes the parameter of packet selection criteria from traditional continuous transmission to delay-aware selection. By introducing the packet delay budget parameter and comparing it with estimated transmission time, the system dynamically adjusts which packets are transmitted, thereby avoiding energy waste on expired packets while maintaining reliable transmission for valid packets.
Solution Approach 2:
The patent applies local quality by differentiating the treatment of packets based on their individual delay status. Instead of uniform transmission of all packets, the system selectively transmits only those packets that meet the delay budget requirement, thereby optimizing radio resource allocation to high-value packets that will actually be delivered successfully.
3Loss of energy
If delay checking is implemented at protocol layers above physical layer, then expired packets can be discarded, but protocol layer complexity increases
Solution Approach 1:
The patent applies universality by implementing the delay checking mechanism at the MAC layer, which serves multiple functions: packet scheduling, delay budget monitoring, and transmission decision-making. This multi-functional approach avoids adding separate complex delay management modules at higher protocol layers while still achieving the goal of discarding expired packets and optimizing radio resource usage.
Data Source
AI summary
The present application discloses a method and a device for wireless communications. A first node receives a first data unit in a first protocol layer, the first protocol layer being a layer above a physical layer; receives a first signaling, the first signaling indicating an initial transmission; and transmits a first radio signal, the first radio signal carrying a first MAC PDU, the first signaling being used to schedule the first radio signal; herein, a first time length is equal to a time interval length between a reception of the first data unit and a transmission of the first radio signal, and whether the first MAC PDU comprises at least partial bits in the first data unit is related to a relative magnitude of the first time length and a first time threshold. The present application can enhance the system capacity and reduce the UE's power consumption.