University of Electronic Science and Technology of China

Beijing Zhigu Tech Co., Ltd.

Guolin Sun

Ran Xu

Kuifei Yu

Kun Xiong

Li Lu

Hangming Zhang

A method for reserving and allocating resources for an ultra-low-latency uplink service flow based on an air interface slice includes: virtualizing an air interface resource of a base station side into an ultra-low-latency slice resource and a non-ultra-low-latency slice resource; recording a collision situation on reserved resources in each retry window, and dynamically adjusting a size of the reserved ultra-low-latency slice resource; after detecting that a terminal transmits ultra-low-latency data on the ultra-low-latency slice resource, performing a resource reallocation and determining whether an idle resource is presented; if presented, allocating the idle resource to the terminal transmitting the ultra-low-latency data and returning the borrowed non-ultra-low-latency slice resource after transmitting the ultra-low-latency data; and if not presented, borrowing the non-ultra-low-latency slice resource allocated to a non-ultra-low-latency terminal and returning the borrowed non-ultra-low-latency slice resource after transmitting the ultra-low-latency data.

Method for reserving and allocating resources for ultra-low-latency uplink service flow based on air interface slice

Embodiments of this application disclose a data transmission method and apparatus and a data receiving method and apparatus. The data transmission method comprises: responding to a data packet received from a first device, and sending a receiving acknowledgment to the first device; and sending the data packet to a second device, wherein the second device is a target device of the data packet. According to the method and apparatus in the embodiments of this application, a middle device responds to receiving of a data packet and sends a receiving acknowledgment to a device of a sending end, causing that the device of the sending end may send a next data packet without waiting for a receiving acknowledgment that is from a device of a receiving end and that is transmitted by using a relatively long link, which greatly shortens a transmission distance of the receiving acknowledgment, reduces delay of sending of a data packet by the sending end, and improves a data sending rate of the device of the sending end, thereby improving data transmission performance.

Data transmission method and apparatus and data receiving method and apparatus

Growing community of inventors

Chengdu, China

Guolin Sun