Initial access procedure using preconfigured resources
First Claim
Patent Images
1. A method of wireless communication by a user equipment (UE), the method comprising:
- transmitting, to a base station, a random access channel preamble over a first bandwidth of a system bandwidth that is less than the system bandwidth;
receiving, from the base station after transmitting the random access channel preamble, a random access channel response over the first bandwidth;
receiving, from the base station after transmitting the random access channel preamble, one or more reference signals over one or more portions of a second bandwidth of the system bandwidth, the second bandwidth being wider than the first bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, the one or more reference signals being usable for determining a beam to be used for data communication over the second bandwidth; and
receiving, from the base station, a physical downlink shared channel (PDSCH) over the second bandwidth via the beam based on the one or more reference signals.
2 Assignments
0 Petitions
Accused Products
Abstract
In aspects, a user equipment may be configured to determine a preconfigured frequency band that is less than an available system bandwidth. The UE may be further configured to perform an initial access procedure with a base station using the preconfigured frequency band. The initial access procedure may include a random access channel (RACH) procedure.
14 Citations
30 Claims
-
1. A method of wireless communication by a user equipment (UE), the method comprising:
-
transmitting, to a base station, a random access channel preamble over a first bandwidth of a system bandwidth that is less than the system bandwidth; receiving, from the base station after transmitting the random access channel preamble, a random access channel response over the first bandwidth; receiving, from the base station after transmitting the random access channel preamble, one or more reference signals over one or more portions of a second bandwidth of the system bandwidth, the second bandwidth being wider than the first bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, the one or more reference signals being usable for determining a beam to be used for data communication over the second bandwidth; and receiving, from the base station, a physical downlink shared channel (PDSCH) over the second bandwidth via the beam based on the one or more reference signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An apparatus for wireless communication at a user equipment (UE), comprising:
-
a memory; and at least one processor coupled to the memory and configured to; transmit, to abase station, a random access channel preamble over a first bandwidth of a system bandwidth that is less than the system bandwidth; receive, from the base station after transmitting the random access channel preamble, a random access channel response over the first bandwidth; receive, from the base station after transmitting the random access channel preamble, one or more reference signals over one or more portions of a second bandwidth of the system bandwidth, the second bandwidth being wider than the first bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, the one or more reference signals being usable for determining a beam to be used for data communication over the second bandwidth; and receive, from the base station, a physical downlink shared channel (PDSCH) over the second bandwidth via the beam based on the one or more reference signals. - View Dependent Claims (13, 14, 15)
-
-
16. A method of wireless communication by a base station, the method comprising :
-
receiving, from a user equipment (UE), a random access channel preamble over a first bandwidth of a system bandwidth that is less than the system bandwidth; transmitting, to the UE after receiving the random access channel preamble, a random access channel response over the first bandwidth; transmitting, to the UE after receiving the random access channel preamble, one or more reference signals over one or more portions of a second bandwidth of the system bandwidth, the second bandwidth being wider than the first bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, the one or more reference signals being usable for determining a beam to be used for data communication over the second bandwidth; and transmitting, to the UE, a physical downlink shared channel (PDSCH) over the second bandwidth via the beam based on the one or more reference signals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. An apparatus for wireless communication by a base station, comprising:
-
a memory; and at least one processor coupled to the memory and configured to; receive, from a user equipment (UE), a random access channel preamble over a first bandwidth of a system bandwidth that is less than the system bandwidth; transmit, to the UE after receiving the random access channel preamble, a random access channel response over the first bandwidth; transmit, to the UE after receiving the random access channel preamble, one or more reference signals over one or more portions of a second bandwidth of the system bandwidth, the second bandwidth being wider than the first bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, the one or more reference signals being usable for determining a beam to be used for data communication over the second bandwidth; and transmit, to the UE, a physical downlink shared channel (PDSCH) over the second bandwidth via the beam based on the one or more reference signals. - View Dependent Claims (29, 30)
-
Specification