Data transmission method and device

Abstract

The embodiment of the invention provides a data transmission method and device, and the method comprises the steps: configuring a first resource serving as a main resource and a second resource serving as a standby resource for a terminal device, so when the first resource serving as the main resource encounters a scene that the PUSCH is blocked, the terminal device can use the second resource asthe standby resource to send the uplink data so as to ensure the time delay of the uplink data. Correspondingly, if the first resource does not meet the scene that the PUSCH sending is blocked, the network equipment can schedule the second resource to other terminal equipment for use. When the uplink data of the URLLC service is transmitted through the method, the time delay of transmitting the uplink data of the URLLC service can be reduced under the condition that the scheduling flexibility, the detection complexity and the uplink resource overhead of the network equipment are not influenced.

Description

technical field [0001] The embodiments of the present application relate to communication technologies, and in particular, to a data transmission method and device. Background technique [0002] A concept of configured grant (configured grant, CG) is introduced into a new generation wireless (new radio, NR) communication system (referred to as: NR system). After the network device semi-statically configures the CG resource for the terminal device, the terminal device can directly use the CG resource to send the physical uplink shared channel (PUSCH) carrying the uplink data when there is uplink data to be sent, without waiting for the network The device dynamically schedules PUSCH. At present, since CG resources are semi-static resources that are individually configured by network devices to terminal devices, there may be conflicts with the resources configured by the high-level layer of the cell where the terminal device is located, or conflicts with resources dynamically ...

AI Technical Summary

Problems solved by technology

However, when there are multiple CG resources where PUSCH transmission is not blocked, the network device is not sure which CG resource the terminal device will use to send uplink data. Therefore, the network device needs to transmit uplink data on the multiple CG resources. Detect uplink data from terminal devices, which increases the complexity of network device detection

In addition, due to limited uplink resources, adopting the scheme of configuring multiple CG resources for terminal devices will lead to a large overhead of uplink resources

When the number of terminal devices is large, the dynamically scheduled PUSCH transmission may be blocked due to too few uplink resources that can be dynamically scheduled

Images