Method and device for data transmission

摘要

A method for data transmission, comprising: receiving, by a device, a paging message, and determining an opportunity for acquiring an uplink transmission resource, by basing on a subframe for receiving the paging message; acquiring, by the device, an uplink transmission resource at the opportunity for acquiring the uplink transmission resource; and reporting, by the device, user data in the uplink transmission resource, by using a time advance that is stored in the device itself and that corresponds to a current position. According to the embodiments of the present invention, no random access is required when the MTC device transmits uplink data, and no RRC connection or user plane bearer is to be established, which greatly simplifies the procedures of data transmission for the device, and the device can quickly and high-efficiently transmit uplink data, thereby improving the transmission efficiency, and reducing the signaling load of the base station.

主权项

1. A method for data transmission, comprising:
receiving, by a device, a paging message; determining, by the device, a time window for acquiring an uplink transmission resource based on a subframe for receiving the paging message; acquiring, by the device, the uplink transmission resource at the time window for acquiring the uplink transmission resource; and reporting, by the device, user data in the uplink transmission resource, by using a time advance value that is stored in the device and that corresponds to a current position value, wherein when the uplink transmission resource is allocated to the device by a base station and the device is a Machine Type Communications (MTC) device, determining, by the MTC device, the time window for acquiring the unlink transmission resource based on the subframe for receiving the paging message comprises determining that the time window for acquiring the uplink transmission resource is based on summing a subframe of the paging message or a subframe indicated by the paging message, a fixed offset, and a multiple of an index number of the MTC device in a paging list, wherein the multiple is a number of subframes spaced between uplink schedules of two MTC devices; or wherein when the device is a device in a paging group, and the uplink transmission resource is allocated to the paging group by a base station, determining, by the device, the time window for aquiring the uplink transmission resource based on the subframe for receiving the paging message comprises identifying a time window after a fixed interval as the time window for acquiring the uplink transmission resource; or wherein determining, by the device, the time window for acquiring the uplink transmission resource, comprises: determining, by the device, a start position of the time window for acquiring the uplink transmission resource; wherein the device is an MTC device; wherein the start position of the time window is based on summing a subframe of the paging message or a subframe indicated by the paging message, a fixed offset, and a size of the time window multiplied by an index number of the MTC device in an paging list; and wherein the uplink transmission resource is an uplink transmission resource allocated to the MTC device by a base station.