Method and apparatus for determining ra-rnti

A method for determining an RA-RNTI, comprising:

• determining, by a base station, a Random Access-Radio Network Temporary Identifier, RA-RNTI, according to time-frequency resources occupied by a random access preamble transmitted by a terminal, wherein the time-frequency resources are time-frequency resources in Orthogonal Frequency Division Multiplexing, OFDM, symbol level;
• transmitting, by the base station, a random access response message, wherein the random access response message comprises downlink control information allocated by the base station for the terminal, and the downlink control information is scrambled by using the RA-RNTI.

A communication device, comprising:

• a processor and a memory, wherein the processor is configured, when executing a computer program stored in the memory, to implement the process of:
• determining, by a terminal, a Random Access-Radio Network Temporary Identifier, RA-RNTI, according to time-frequency resources occupied by a random access preamble sequence, wherein the time-frequency resources are time-frequency resources in Orthogonal Frequency Division Multiplexing, OFDM, symbol level;
• receiving, by the terminal, a random access response message transmitted by the base station, and descrambling downlink control information contained in the random access response message by using the RA-RNTI.