Method and device for transmitting/receiving uplink control information in wireless communication system
US-2021160011-A1 · May 27, 2021 · US
Contention window management method and sending device
US11553531B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11553531-B2 |
| Application number | US-202016991227-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 12, 2020 |
| Priority date | Feb 14, 2018 |
| Publication date | Jan 10, 2023 |
| Grant date | Jan 10, 2023 |
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.
Embodiments of this application provide a contention window management method applied to an unlicensed band. The method includes sending, by a sending device, one or more data packets to one or more receiving devices in one reference time unit or a plurality of reference time units, where the one or more data packets occupy a first bandwidth. The method further includes receiving, by the sending device from the one or more receiving devices, a hybrid automatic repeat request HARQ or HARQs for the one or more data packets. The sending device determines a contention window (CW) size of a second bandwidth with reference to the HARQ or HARQs. The CW update based on HARQ feedback improves communication efficiency.
First claim
Opening claim text (preview).
What is claimed is: 1. A contention window management method applied to an unlicensed band, comprising: sending, by a sending device, one or more data packets to one or more receiving devices in one reference time unit or a plurality of reference time units, wherein the one or more data packets occupy a first bandwidth; receiving, by the sending device from the one or more receiving devices, a hybrid automatic repeat request (HARQ) feedback or a plurality of HARQ feedbacks for the one or more data packets; and determining, by the sending device, a contention window (CW) size of a second bandwidth with reference to the HARQ feedback or HARQ feedbacks for the one or more data packets. 2. The method according to claim 1 , wherein the determining, by the sending device, a contention window (CW) size of a second bandwidth with reference to the HARQ feedback or HARQ feedbacks for the one or more data packets comprises: determining the CW size of the second bandwidth based on a percentage Z of NACKs or ACKs in the HARQ feedback or HARQ feedbacks for the one or more data packets. 3. The method according to claim 2 , wherein the percentage Z satisfies the following formula: Z = N A C K T B + ∑ x Z ′ N T B , wherein NACK TB represents a quantity of TBs whose smallest feedback units are TBs and for which NACKs are fed back and that are transmitted in the one reference time unit or the plurality of reference time units, N TB represents a quantity of TBs transmitted in the one reference time unit or the plurality of reference time units, x represents a quantity of TBs whose smallest feedback units are CBGs and that are transmitted in the one reference time unit or the plurality of reference time units, and Z ′ = α · NACK CBG + β · N N A C K α · N C B G + β , wherein NACK CBG represents a quantity of CBGs for which NACKs are fed back and that are in one TB, N NACK represents a TB-based HARQ feedback for the TB, N CBG represents a quantity of CBGs in the TB, α represents a weighting factor of a CBG-based HARQ feedback, and β represents a weighting factor of a TB-based HARQ feedback. 4. The method according to claim 2 , wherein the percentage Z satisfies the following formula: Z = N A C K T B + ∑ x Z ′ N T B , wherein NACK TB represents a quantity of TBs whose smallest feedback units are TBs and that are transmitted in the one reference time unit or the plurality of reference time units and for which NACKs are fed back, N TB represents a quantity of TBs transmitted in the one reference time unit or the plurality of reference time units, x represents a quantity of TBs whose smallest feedback units are CBGs and that are transmitted in the one reference time unit or the plurality of reference time units, and Z ′ = α · NACK CBG α · N C B G + β · N N A C K , wherein NACK CBG represents a quantity of CBGs for which NACKs are sent and that are in the TB, N NACK represents a TB-based HARQ feedback for the TB, N CBG represents a qua
Assignees
Inventors
Classifications
- H04L1/1812Primary
Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title
Arrangements affording multiple use of the transmission path · CPC title
Spectrum sharing arrangements {between different networks} · CPC title
with collision avoidance · CPC title
using carrier sensing, e.g. carrier sense multiple access [CSMA] · 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 US11553531B2 cover?
- Embodiments of this application provide a contention window management method applied to an unlicensed band. The method includes sending, by a sending device, one or more data packets to one or more receiving devices in one reference time unit or a plurality of reference time units, where the one or more data packets occupy a first bandwidth. The method further includes receiving, by the sendin…
- Who is the assignee on this patent?
- Huawei Tech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04L1/1812. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 10 2023 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).