According to the technical solution of the disclosure, if a duration for the UE to generate data next time exceeds the interval threshold, the UE skips indicating the need for subsequent transmission resources (that is, indicate that there is subsequent transmission when the duration is shorter than the interval threshold). The UE will re-initiate an SDT process once there is data transmission next time. As such, it is avoided that a current beam cannot support data transmission due to UE movement in case of excessively long interval, which can improve reliability of data transmission and a network performance

The Third Implementation

The third implementation of the disclosure provides a method for uplink data transmission. An implementation scenario of the implementation of the disclosure may be the communication system illustrated in FIG. 1 or other communication systems. Referring to FIG. 6, FIG. 6 illustrates a method for uplink data transmission. As illustrated in FIG. 6, the method includes the following.

At S600, a UE indicates in Msg3/MsgA a channel quality or an identifier of a currently accessed beam.

At S601, a base station selects an appropriate modulation-coding scheme according to indication in Msg3/MsgA.

According to the technical solution of the disclosure, the UE can indicate in MsgA or Msg3 the channel quality of the currently accessed beam. Optionally, the UE can indicate a channel quality of a (candidate) good beam, such as a channel quality of a beam exceeding a signal-quality threshold. Since the UE needs to transmit data multiple times, a beam accessed by the UE may change during the multiple data transmission (the UE determines a corresponding preamble according to a selected beam in a random access procedure, and the base station determines the beam accessed by the UE according to the preamble transmitted by the UE). In order to improve transmission efficiency, the UE reports a signal quality of the accessed beam, such as a channel quality index (CQI), which helps the base station to select an appropriate modulation-coding scheme to improve transmission efficiency and spectrum efficiency. The UE can report the channel quality of the currently accessed beam, and can also report a signal quality of a candidate beam(s). If the currently accessed beam is the strongest beam in a serving cell measured by the UE and the UE also detects one or more second-strongest beams, the UE can report a beam identifier and a channel quality of the second-strongest beam or only report the beam ID, so that the base station can know a candidate beam(s) of the UE, select a candidate beam to provide services for the UE, and know a channel quality of the candidate beam measured by the UE. As such, when a beam serving the UE changes, an appropriate modulation-coding scheme can be selected for data transmission.

It can be understood that, in order to implement the above functions, the UE includes software modules and/or hardware corresponding to the respective functions. In combination with algorithm steps/operations of each example described in the implementations disclosed herein, the disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented by way of hardware or computer software driving hardware depends on particular application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each particular application in combination with the implementations, but such implementation should not be considered as beyond the scope of the disclosure.

According to implementations of the disclosure, functional modules/units may be divided for an electronic device in accordance with the foregoing method examples. For example, functional units may be divided according to corresponding functions, and two or more functions may be integrated into one processing unit. The above-mentioned integrated unit can be implemented in the form of hardware. It should be noted that, the division of units in implementations of the disclosure is schematic and is merely a logical function division; there may be other division manners in actual implementation.

In the case of dividing functional units according to respective functions, FIG. 7 is a schematic diagram of a UE. As illustrated in FIG. 7, a UE 700 includes a processing unit 701. The processing unit 701 can be used to support the UE to execute the operations At S300 and other operations, and/or other processes of the technical solutions described herein.

It should be noted that, all relevant contents of the operations in the foregoing method implementations can be cited for the description of functions of corresponding function units, which will not be repeated herein.

In the case of adopting an integrated unit, a UE may include a processing unit, a storage unit, and a communication unit. The processing unit is configured to control and manage actions of the UE, for example, to support the UE to perform the operations performed by the processing unit. The storage unit is configured to support an electronic device to execute program codes and data stored, and the like. The communication module is configured to support communication between the UE and other devices.

The processing unit may be a processor or a controller. The processing unit can implement or perform various exemplary logic blocks, modules/units, and circuits described in conjunction with disclosed contents of the disclosure. The processor may also be a combination of computing functions, for instance, a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage unit may be a memory. Specifically, the communication unit may be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, and a Wi-Fi chip.

It can be understood that, interface connection relationships between modules/units illustrated in implementation of the disclosure are only schematic illustration, and do not constitute a structural limitation on the UE. In other implementations of the disclosure, the UE may also adopt different interface connection modes in the foregoing implementations, or a combination of multiple interface connection modes.

Referring to FIG. 8, FIG. 8 illustrates an electronic device 80 provided in implementations of the disclosure. The electronic device 80 (e.g., a UE) includes a processor 801, a memory 802, and a communication interface 803. The processor 801, the memory 802, and the communication interface 803 are connected to each other through a bus.

The memory 802 may include, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable ROM (EPROM), or a compact disc ROM (CD-ROM). The memory 802 is configured to store related computer programs and data. The communication interface 803 is configured to receive and transmit data.

The processor 801 may be one or more central processing units (CPU). If the processor 801 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor