Random access method, random access device, and terminal
First Claim
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1. A random access method for a Long Term Evolution (LTE) system operating on an unlicensed frequency band, comprising:
- determining a format of a random access preamble sequence;
determining a channel detection mode for a random access channel according to the format of the random access preamble sequence;
detecting the random access channel according to the determined channel detection mode; and
transmitting the random access preamble sequence via the random access channel when it is detected that the random access channel is in an idle state,wherein the format of the random access preamble sequence is one of;
a format 0, a format 1, a format 2, a format 3, or a format 4;
wherein a priority of the channel detection mode corresponding to the format 4>
a priority of the channel detection mode corresponding to the format 0>
a priority of the channel detection mode corresponding to the format 1=a priority of the channel detection mode corresponding to the format 2>
a priority of the channel detection mode corresponding to the format 3, with the priority of the channel detection mode representing a difficulty level for occupation of the random access channel by a terminal and/or a time length for occupation of the random access channel by the terminal, andwherein, among the channel detection modes corresponding to the format 0, the format 1, the format 2, the format 3 and the format 4, a channel detection mode having a higher priority is more easily occupied by the terminal and/or is occupied by the terminal for a shorter time length.
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Abstract
A random access method, device, and terminal for an LTE system operating on an unlicensed frequency band. The method comprises: determining a format of a random access preamble sequence; determining, according to the format of the random access preamble sequence, a channel detection mode for a random access channel; performing, according to the determined channel detection mode, detection on the random access channel; and upon detection of the random access channel being in an idle state, sending the random access preamble sequence via the random access channel.
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Citations
18 Claims
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1. A random access method for a Long Term Evolution (LTE) system operating on an unlicensed frequency band, comprising:
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determining a format of a random access preamble sequence; determining a channel detection mode for a random access channel according to the format of the random access preamble sequence; detecting the random access channel according to the determined channel detection mode; and transmitting the random access preamble sequence via the random access channel when it is detected that the random access channel is in an idle state, wherein the format of the random access preamble sequence is one of;
a format 0, a format 1, a format 2, a format 3, or a format 4;wherein a priority of the channel detection mode corresponding to the format 4>
a priority of the channel detection mode corresponding to the format 0>
a priority of the channel detection mode corresponding to the format 1=a priority of the channel detection mode corresponding to the format 2>
a priority of the channel detection mode corresponding to the format 3, with the priority of the channel detection mode representing a difficulty level for occupation of the random access channel by a terminal and/or a time length for occupation of the random access channel by the terminal, andwherein, among the channel detection modes corresponding to the format 0, the format 1, the format 2, the format 3 and the format 4, a channel detection mode having a higher priority is more easily occupied by the terminal and/or is occupied by the terminal for a shorter time length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A random access device for an LTE system operating on an unlicensed frequency band, comprising:
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a processor; and a memory for storing executable instructions, wherein the processor, when executing the executable instructions, is configured to; determine a format of a random access preamble sequence; determine a channel detection mode for a random access channel according to the format of the random access preamble sequence; detect the random access channel according to the channel detection mode determined by the second determining unit; and transmit the random access preamble sequence via the random access channel when it is detected that the random access channel is in an idle state, wherein the format of the random access preamble sequence is one of;
a format 0, a format 1, a format 2, a format 3, or a format 4;wherein a priority of the channel detection mode corresponding to the format 4>
a priority of the channel detection mode corresponding to the format 0>
a priority of the channel detection mode corresponding to the format 1=a priority of the channel detection mode corresponding to the format 2>
a priority of the channel detection mode corresponding to the format 3, with the priority of the channel detection mode representing a difficulty level for occupation of the random access channel by a terminal and/or a time length for occupation of the random access channel by the terminal, andwherein, among the channel detection modes corresponding to the format 0, the format 1, the format 2, the format 3 and the format 4, a channel detection mode having a higher priority is more easily occupied by the terminal and/or is occupied by the terminal for a shorter time length. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification