代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A method of reporting control information to a base station (BS) in a wireless communication system using a number of orthogonal frequency division multiplexing (OFDM) symbols, the method performed by a user equipment (UE) and comprising:
transmitting a random access preamble to a base station; if the random access preamble is an initial random access preamble transmitted after a new random access procedure is initiated, storing first time stamp information indicating when the initial random access preamble is transmitted to the BS, and setting flag information on; receiving, in response to the random access preamble, a random access response from the BS; transmitting, in response to the random access response, a scheduled message to the BS; receiving, in response to the scheduled message, a contention resolution message from the BS; if the flag information is set to on, storing, in response to the contention resolution message, second time stamp information indicating when contention resolution message is received, and setting the flag information off; receiving a UE information request message from the BS; and transmitting, in response to the UE information request message, a UE information response message including the first time stamp information and the second time stamp information, wherein the first time stamp information indicates when the initial random access preamble is transmitted to the BS by using a system frame number, wherein the system frame number is indicated by a first number of bits indicating a base and a second number of bits indicating an exponent, and wherein the second time stamp information is indicated by a differential information indicating a change of frame numbers between the transmission of the initial random access preamble and the reception of the contention resolution message. |