Method and Apparatus for Performing Contention Based Random Access in a Carrier Frequency
US-2018205516-A1 · Jul 19, 2018 · US
Terminal apparatus, base station apparatus, communication method, and integrated circuit
US10932207B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10932207-B2 |
| Application number | US-201816484565-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 15, 2018 |
| Priority date | Feb 20, 2017 |
| Publication date | Feb 23, 2021 |
| Grant date | Feb 23, 2021 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A terminal apparatus increments a transmit counter based on a failure of random access response reception or contention resolution, and receives information for indicating a higher layer parameter powerRampingStep(1) and information for indicating a higher layer parameter powerRampingStep(2). A transmit power for PRACH transmission in a first step of a 2 step contention based random access procedure is given based at least on the transmission counter and the higher layer parameter powerRampingStep(1), and a transmit power for PUSCH transmission in the first step of the 2 step contention based random access procedure is given based at least on the transmission counter and the higher layer parameter powerRampingStep(2).
First claim
Opening claim text (preview).
The invention claimed is: 1. A terminal device comprising: control circuitry configured to control a 2-step contention based random-access procedure and a 4-step contention based random-access procedure; and transmission circuitry configured to transmit a physical random access channel with a random access preamble in a first step of the 2-step contention based random-access procedure or in a first step of the 4-step contention based random-access procedure; wherein transmission power for the physical random access channel is given at least based on a PREAMBLE_RECEIVED_TARGET_POWER; for the 4-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 0 ) and a powerRampingStep( 0 ); and for the 2-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 1 ) and a powerRampingStep( 1 ). 2. The terminal device according to claim 1 , wherein the preambleInitialReceivedTargetPower( 0 ) and the preambleInitialReceivedTargetPower( 1 ) and the powerRampingStep( 0 ) and the powerRampingStep( 1 ) are given by radio resource control information. 3. The terminal device according to claim 1 , wherein the powerRampingStep( 0 ) is a step size for power ramping up for the PREAMBLE_RECEIVED_TARGET_POWER for the 4-step contention based random access procedure, and the powerRampingStep( 1 ) is a step size for power ramping up for the PREAMBLE_RECEIVED_TARGET_POWER for the 2-step contention based random access procedure. 4. A base station device comprising: control circuitry configured to control a 2-step contention based random-access procedure and a 4-step contention based random-access procedure; and reception circuitry configured to receive a physical random access channel with a random access preamble in a first step of the 2-step contention based random-access procedure or in a first step of the 4-step contention based random-access procedure; wherein transmission power for the physical random access channel is given based at least on a PREAMBLE_RECEIVED_TARGET_POWER; for the 4-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 0 ) and a powerRampingStep( 0 ); and for the 2-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 1 ) and a powerRampingStep( 1 ). 5. The base station device according to claim 4 , wherein the preambleInitialReceivedTargetPower( 0 ) and the preambleInitialReceivedTargetPower( 1 ) and the powerRampingStep( 0 ) and the powerRampingStep( 1 ) are given by radio resource control information. 6. The base station device according to claim 4 , wherein the powerRampingStep( 0 ) is a step size for power ramping up for the PREAMBLE_RECEIVED_TARGET_POWER for the 4-step contention based random access procedure, and the powerRampingStep( 1 ) is a step size for power ramping up for the PREAMBLE_RECEIVED_TARGET_POWER for the 2-step contention based random access procedure. 7. A communication method used for a terminal device comprising: controlling a 2-step contention based random-access procedure and a 4-step contention based random-access procedure; and transmitting a physical random access channel with a random access preamble in a first step of the 2-step contention based random-access procedure or in a first step of the 4-step contention based random-access procedure; wherein transmission power for the physical random access channel is given based at least on a PREAMBLE_RECEIVED_TARGET_POWER; for the 4-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 0 ) and a powerRampingStep( 0 ); and for the 2-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 1 ) and a powerRampingStep( 1 ). 8. A communication method used for a base station device comprising: controlling a 2-step contention based random-access procedure and a 4-step contention based random-access procedure; and receiving a physical random access channel with a random access preamble in a first step of the 2-step contention based random-access procedure or in a first step of the 4-step contention based random-access procedure; wherein transmission power for the physical random access channel is given based at least on a PREAMBLE_RECEIVED_TARGET_POWER; for the 4-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 0 ) and a powerRampingStep( 0 ); and for the 2-step contention based random access procedure, the PREAMBLE_RECEIVED_TARGET_POWER is given based at least on a preambleInitialReceivedTargetPower( 1 ) and a powerRampingStep( 1 ).
Assignees
Inventors
Classifications
with 2-step access · CPC title
using contention-free random access [CFRA] · CPC title
Random access procedures, e.g. with 4-step access · CPC title
Uplink power control · CPC title
Transitions between radio resource control [RRC] states · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10932207B2 cover?
- A terminal apparatus increments a transmit counter based on a failure of random access response reception or contention resolution, and receives information for indicating a higher layer parameter powerRampingStep(1) and information for indicating a higher layer parameter powerRampingStep(2). A transmit power for PRACH transmission in a first step of a 2 step contention based random access proc…
- Who is the assignee on this patent?
- Sharp Kk, Fg innovation co ltd
- What technology area does this patent fall under?
- Primary CPC classification H04W52/36. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 23 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).