`
`Reverse Link Variable Data Rates
`with Dedicated RA (Reverse Activity) Bits
`
`Sungwook Koh(gohs@lgic.co.kr), Youngjo Lee (lyj@lgic.co.kr)
`LG Electronics
`
`TSG-C WG5 Meeting, Phoenix, USA
`
`Notice
`
`©2001 LG Electronics Inc. All rights reserved.
`The information contained in this contribution is provided for the sole purpose of promoting discussion within
`the 3GPP2 and its Organization Partners and is not binding on the contributor. The contributor reserves the
`right to add to, amend, or withdraw the statements contained herein.
`LG Electronics Inc. grants a free, irrevocable license to 3GPP2 and its Organization Partners to incorporate
`text or other copyrightable material contained in the contribution and any modifications thereof in the creation
`of 3GPP2 publications; to copyright and sell in Organizational Partner’s name any Organizational Partner’s
`standards publication even though it may include portions of the contribution; and at the Organization
`Partner’s sole discretion to permit others to reproduce in whole or in part such contributions or the resulting
`Organizational Partner’s standards publication.
`The contributor may hold one or more patents or copyrights that cover information contained in this
`contribution. A license will be made available to applicants under reasonable terms and conditions that are
`demonstrably free of any unfair discrimination.
`Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license
`or right under any patent, whether or not the use of information herein necessarily employs an invention of
`any existing or later issued patent, or copyright. The contributor reserves the right to use all material
`submitted in this contribution for his own purposes, including republication and distribution to others.
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 1 of 6
`
`
`
`Outline
`
`• Introduction
`• Current Mechanism
`• Proposed Mechanism
`• Conclusion
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 2 of 6
`
`
`
`Introduction
`
`• Main concerns for 1x-EV : focused on forward link
`• Increasing FL throughput :
`– AMC (Adaptive Modulation & Coding)
`– Hybrid ARQ (AAIR)
`• Increasing RL throughput
`– Nothing special has been presented
`– About 1Mbps with 8PSK modulation is defined in
`Qualcomm’s proposal and 1xtreme proposal
`• Fast RL data rate adaptation technique with more increased
`granularity may be required
`• In this proposal, a mechanism of Reverse link variable data rate
`with dedicated type of RA (Reverse Activity) bits will be
`presented.
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 3 of 6
`
`
`
`Current Mechanism (1X-EV DO)
`
`• 1x-EV DO : p-persistent based variable data rate
`– mobile itself can increase or keep RL data rate depending on
`p-persistent random function if combined busy bit is ‘0’
`– mobile itself can also decrease RL data rate with p-
`persistent random function if combined busy bit is ‘1’
`
`• Some points to be discussed in current mechanism
`– Every mobile has the same probability of increasing or
`decreasing the RL data rate regardless of its location, path
`loss and shadowing
`– It may be very difficult even for the mobiles nearest the
`center of cell to reach maximum RL data rate
`– Other cell interference can not be controlled in a proper way
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 4 of 6
`
`
`
`Proposed Mechanism
`
`• BS controls each mobile’s reverse link data rates by dedicated
`type RA(Reverse Activity) bit
`• Mobiles near the center of a cell are controlled to have a higher
`probability of increasing the reverse link data rates than mobiles
`far from the center of cell. In this way, the other cell interference
`can be minimized.
`• BS sets RA bit to
` ‘ 1’ to inform certain mobiles to increase RL data rate
`
`‘-1’ to inform certain mobiles to decrease RL data rate
` ‘ 0’ to inform certain mobiles to keep RL data rate
`• To support this mechanism, a Forward Common Rate Control
`Channel (F-CRCCH) should be required. It has a similar
`structure as that of F-CPCCH.
`• RA bit will be updated every 20 ms.
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 5 of 6
`
`
`
`Conclusion
`
`• A new mechanism for controlling the RL data rates is proposed
`• Advantage of the proposal
`– can minimize other cell interferences
`– can increase reverse link throughput
`• LGE propose this mechanism as a component proposal for 1x-
`EV DV
`
`C50-20010212-025-RL-Variable-RA
`
`Ex. 1009 - Sierra Wireless, Inc.
`Sierra Wireless, Inc., et al. v. Sisvel S.P.A., IPR2021-01141
`Page 6 of 6
`
`
Accessing this document will incur an additional charge of $.
After purchase, you can access this document again without charge.
Accept $ Charge
Still Working On It
This document is taking longer than usual to download. This can happen if we need to contact the court directly to obtain the document and their servers are running slowly.
Give it another minute or two to complete, and then try the refresh button.
A few More Minutes ... Still Working
It can take up to 5 minutes for us to download a document if the court servers are running slowly.
Thank you for your continued patience.
This document could not be displayed.
We could not find this document within its docket. Please go back to the docket page and check the link. If that does not work, go back to the docket and refresh it to pull the newest information.
Your account does not support viewing this document.
You need a Paid Account to view this document. Click here to change your account type.
Your account does not support viewing this document.
Set your membership
status to view this document.
With a Docket Alarm membership, you'll
get a whole lot more, including:
- Up-to-date information for this case.
- Email alerts whenever there is an update.
- Full text search for other cases.
- Get email alerts whenever a new case matches your search.
One Moment Please
The filing “” is large (MB) and is being downloaded.
Please refresh this page in a few minutes to see if the filing has been downloaded. The filing will also be emailed to you when the download completes.
Your document is on its way!
If you do not receive the document in five minutes, contact support at support@docketalarm.com.
Sealed Document
We are unable to display this document, it may be under a court ordered seal.
If you have proper credentials to access the file, you may proceed directly to the court's system using your government issued username and password.
Access Government Site
