Method, apparatus, device and network system for adding secondary serving cell
摘要
說(shuō)明書
According to the method for adding a secondary serving cell, the apparatus, the device, and the network system that are provided in the embodiments of the present invention, a primary base station sends a secondary serving cell addition request message to a secondary base station, so that in a subsequent step, a terminal can correctly descramble a random access resource allocation message received by the terminal, and correctly send a random access request message to the secondary base station according to the random access resource allocation message, and the secondary base station then determines, according to the random access request message, content of a random access response message and a time for sending the message to the terminal. According to the embodiments of the present invention, a primary serving cell and a secondary serving cell can still work properly when the primary serving cell and the secondary serving cell belong to different base stations, or a delay over a connection between the primary serving cell and the secondary serving cell is relatively long and a capacity is relatively small.
Step 5301: After sending a secondary serving cell addition response message to a primary base station, the secondary base station sends a random access resource allocation message to a terminal, where the secondary serving cell addition response message includes a cell radio network temporary identifier of the terminal and the random access resource allocation message includes a serial number of a random access preamble code and a serial number of a physical random access channel mask code.
