US 10,433,339 B2 · Random access for low latency wireless communications

Abstract

Wireless devices may exchange data related to multiple available random access procedures for network access. A random access procedure of the available random access procedures may be selected, and a random access message transmitted based on the selected random access procedure. Available random access procedures may include procedures that provide for a different number of random access messages or that are for use in communications having different transmission time intervals (TTIs). For example, a random access procedure may include a total of two random access messages or a total of four random access messages for accessing the wireless communications network. The use of one random access procedure instead of the other may depend on a wireless device's location relative to its serving base station.

Claims30

Dependent claims

A method for wireless communication, comprising:

receiving signaling indicative of a set of physical random access channel (PRACH) procedures for use in accessing a wireless communications network, the set of PRACH procedures including at least a first PRACH procedure and a second PRACH procedure, wherein the first PRACH procedure supports access to the wireless communications network with a total of two random access messages and the second PRACH procedure supports access to the wireless communications network with a total of more than two random access messages, a random access message associated with the first PRACH procedure being based at least in part on a first random access message and a second random access message associated with the second PRACH procedure;
selecting the first PRACH procedure of the set of PRACH procedures based at least in part on the received signaling;
and
transmitting the random access message according to the selected PRACH procedure.

1 more element

An apparatus for wireless communication, comprising:

a processor;
memory in electronic communication with the processor;
and
instructions stored in the memory;
wherein the instructions are executable by the processor to cause the apparatus to:
receive signaling indicative of a set of physical random access channel (PRACH) procedures for use in accessing a wireless communications network, the set of PRACH procedures including at least a first PRACH procedure and a second PRACH procedure, wherein the first PRACH procedure supports access to the wireless communications network with a total of two random access messages and the second PRACH procedure supports access to the wireless communications network with a total of more than two random access messages, a random access message associated with the first PRACH procedure being based at least in part on a first random access message and a second random access message associated with the second PRACH procedure;
select the first PRACH procedure of the set of PRACH procedures based at least in part on the received signaling;
and
transmit the random access message according to the selected PRACH procedure.

6 more elements

An apparatus for wireless communication, comprising:

a processor;
memory in electronic communication with the processor;
and
instructions stored in the memory;
wherein the instructions are executable by the processor to cause the apparatus to:
transmit signaling indicative of a set of physical random access channel (PRACH) procedures for use in accessing a wireless communications network, the set of PRACH procedures including at least a first PRACH procedure and a second PRACH procedure, wherein the first PRACH procedure supports access to the wireless communications network with a total of two random access messages and the second PRACH procedure supports access to the wireless communications network with a total of more than two random access messages, a random access message associated with the first PRACH procedure being based at least in part on a first random access message and a second random access message associated with the second PRACH procedure;
and
receive the random access message according to the first PRACH procedure of the set of PRACH procedures.

5 more elements

Dependencies are inferred from the claim text.

Random access for low latency wireless communications

Life of this patent

Random access for low latency wireless communications

Life of this patent

Abstract

Claims30