US 10,433,343 B2 · Method and apparatus for improving random access procedure in a wireless communication system

Abstract

A method and apparatus are disclosed, from the perspective of the UE, for performing random access procedure. In one embodiment, the method includes the UE receives a first back-off information from the network in a broadcast message, wherein the first back-off information includes a start offset of back-off interval. The method further includes the UE transmits a first preamble to the network. In addition, the method includes the UE determines a back-off interval based on the first back-off information and a second back-off information, wherein the second back-off information is received when the UE monitors a response for the first preamble. The method also includes the UE transmits a second preamble to the network after the back-off interval is finished.

Claims21

Dependent claims

A method of a UE (User Equipment) for performing random access procedure, comprising:

the UE receives a first back-off information from a first base station in a dedicated message, wherein the first back-off information includes a granularity information;
the UE transmits a first preamble to a second base station;
the UE determines a back-off interval based on the first back-off information and a second back-off information, wherein the second back-off information is received when the UE monitors a response for the first preamble;
and
the UE transmits a second preamble to the second base station after a back-off time, wherein the back-off time is randomly selected within the back-off interval.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/663,662Filed 28 Jul 2017 · us provisional application

Priority

28 Jul 2016

Published

US 2018/0035469 A11 Feb 2018

Granted

1 Oct 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 74/0833
Non-scheduled access, e.g. ALOHA: random access procedures, e.g. with 4-step access
H04W 72/56
Allocation or scheduling criteria for wireless resources: based on priority criteria
H04W 74/002
Wireless channel access: transmission of channel access control information
H04W 74/0838
Random access procedures, e.g. with 4-step access: using contention-free random access [CFRA]

Family

Application62/367,765Us provisional application · filed 28 Jul 2016

Application62/367,897Us provisional application · filed 28 Jul 2016

Application62/367,967Us provisional application · filed 28 Jul 2016

US 2018/0035469 A1Pre-grant publication · published 1 Feb 2018

US 10,433,343 B2This patent

From the US filing history. Foreign family members aren’t listed.

Method and apparatus for improving random access procedure in a wireless communication system

Life of this patent

Method and apparatus for improving random access procedure in a wireless communication system

Life of this patent

Abstract

Claims21