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US 12,598,578 B2Granted
Method and apparatus for performing random access
AssigneeLenovo (Beijing) Limited
InventorsMin Xu, Lianhai Wu, Jing Han, Haiming Wang, Ran Yue, Jie Shi, Jie Hu
Life of this patent
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Abstract
The present application relates to a method and an apparatus for performing random access. The method includes: receiving a random access type condition message from a base station; and selectively performing a 2-step random access procedure or a 4-step random access procedure with the base station according to the random access type condition message.
Claims20
A method performed by a user equipment (UE), the method comprising:
- receiving a random access type condition message that includes a time threshold from a base station (BS);
- determining whether a propagation delay or a timing advance between the UE and the BS is greater than the time threshold to obtain a determination result;
- and
- selectively performing a 2-step random access procedure or a 4-step random access procedure with the BS according to the determination result, wherein selectively performing the 2-step random access procedure or the 4-step random access procedure comprises:
- performing the 2-step random access procedure if the propagation delay or the timing advance is not greater than the time threshold;
- or
- performing the 4-step random access procedure if the propagation delay or the timing advance is greater than the time threshold.
4 more elements
A base station (BS) for wireless communication, comprising:
- at least one memory;
- and
- at least one processor coupled with the at least one memory and configured to cause the BS to:
- transmit a random access type condition message that includes a time threshold to a user equipment (UE);
- determine whether a propagation delay or a timing advance between the UE and the BS is greater than the time threshold to obtain a determination result;
- and
- selectively perform a 2-step random access procedure or a 4-step random access procedure with the UE according to the determination result, wherein, to selectively perform the 2-step random access procedure or the 4-step random access procedure, the at least one processor is configured to cause the BS to:
- perform the 2-step random access procedure if the propagation delay or the timing advance is not greater than the time threshold;
- or
- perform the 4-step random access procedure if the propagation delay or the timing advance is greater than the time threshold.
7 more elements
A user equipment (UE) for wireless communication, comprising:
- at least one memory;
- and
- at least one processor coupled with the at least one memory and configured to cause the UE to:
- receive a random access type condition message that includes a time threshold from a base station (BS);
- determine whether a propagation delay or a timing advance between the UE and the BS is greater than the time threshold to obtain a determination result;
- and
- selectively perform a 2-step random access procedure or a 4-step random access procedure with the BS according to the determination result, wherein, to selectively perform the 2-step random access procedure or the 4-step random access procedure, the at least one processor is configured to cause the UE to:
- perform the 2-step random access procedure if the propagation delay or the timing advance is not greater than the time threshold;
- or
- perform the 4-step random access procedure if the propagation delay or the timing advance is greater than the time threshold.
7 more elements
A method performed by a base station (BS), the method comprising:
- transmitting a random access type condition message that includes a time threshold to a user equipment (UE);
- determining whether a propagation delay or a timing advance between the UE and the BS is greater than the time threshold to obtain a determination result;
- and
- selectively performing a 2-step random access procedure or a 4-step random access procedure with the UE according to the determination result, wherein selectively performing the 2-step random access procedure or the 4-step random access procedure comprises:
- performing the 2-step random access procedure if the propagation delay or the timing advance is not greater than the time threshold;
- or
- performing the 4-step random access procedure if the propagation delay or the timing advance is greater than the time threshold.
4 more elements
Dependencies are inferred from the claim text.