Method for determining bundling size, user equipment and network-side device

A method for determining a bundling size, comprising:

• using, by a user equipment, a default bundling size or a bundling size configured via a higher-layer signaling to transmit data, in case that dynamic adjustment of bundling size is disabled by a network-side device and downlink control information (DCI) signaling includes an indication that a bundling size is not received by the user equipment;
• wherein the using, by the user equipment, the default bundling size or the bundling size configured via the higher-layer signaling to transmit data comprises:
• using, by the user equipment, the default bundling size to transmit data;
• or
• using, by the user equipment, the bundling size configured by the network-side device via the higher-layer signaling to transmit data, wherein the bundling size is a bundling size in a bundling size set available to the user equipment;
• wherein the default bundling size is a bundling size pre-configured by the user equipment;
• wherein the bundling size set available to the user equipment comprises:
• a bundling size set configured by the network-side device for the user equipment according to capability information reported by the user equipment, the capability information being used to indicate whether the user equipment supports one-physical resource block (PRB) bundling.