Multicarrier signal transmission in wireless communications

摘要

A wireless device receives a control command for transmission of a random access preamble on a first cell. A first packet is scheduled for parallel uplink transmission with the random access preamble transmission. The wireless device transmits the random access preamble. The wireless device transmits the first packet in parallel with the random access preamble if the random access preamble and the first packet are scheduled for transmission in different cell groups and the wireless device has sufficient power to transmit the first packet in parallel with the preamble.

主权项

1. A wireless device comprising:
a) one or more communication interfaces; b) one or more processors; and c) memory storing instructions that, when executed, cause said wireless device to:
i) receive at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, said plurality of cells grouped into a plurality of cell groups;ii) receive a control command for transmission of a preamble on a first cell in said plurality of cells, at least a first packet being scheduled on a second cell and for parallel uplink transmission with said preamble transmission, said first packet being any one of the following:
(1) a control packet on an uplink control channel; and(2) a packet comprising control information and/or data on an uplink data channel;iii) determine a transmission power for said preamble;iv) transmit said preamble; andv) transmit said first packet in parallel with said preamble if said preamble and said first packet are scheduled for transmission in different cell groups and said wireless device has sufficient power to transmit said first packet in parallel with said preamble; and
wherein if a total calculated transmission power exceeds a predefined value, transmission power of said first packet is adjusted according to a predefined rule considering a higher priority for said transmission power of said preamble compared with a transmission power priority of said first packet.