Invalidity dossier
US 7162246
Mobile telecommunications with multisector antennas
Current assignee: Alcatel Lucent SAS
Added 8/26/2026, 10:51:24 PM
Active provider: DeepSeek · deepseek-v4-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 7,162,246 B2
Title: Mobile telecommunications with multisector antennas
Patent number: US 7,162,246 B2
Application number: US 10/860,684
Inventors: Christophe Gruet; Eric Georgeaux
Original assignee: Nortel Networks Ltd; later reassigned to Alcatel Lucent (formerly known as Alcatel), per the source's assignment entries. Current assignee listed: Alcatel Lucent SAS.
Priority date: 2003-06-03
Filing date: 2004-06-03
Grant/publication date: 2007-01-09 (application granted; US20050020312A1 published 2005-01-27)
Status: Expired – Lifetime; adjusted expiration 2024-11-25
Purpose (from the supplied text): In mobile telecommunications, an operator divides coverage into zones equipped with transmit/receive antennas controlled by an access network node; a multisector antenna transmits and receives in several "main directions," each defining an angular sector, whose union covers the zone. A base node manages one cell per sector, and a radio network controller supervises several base nodes. The stated problem arises when a mobile travels near both a sector border and a zone border, causing soft handover and softer handover to compete. The invention's subject is an access network node comprising a first multisector antenna operating on a first fixed frequency multiplexing a first multitude of channels, and a second multisector antenna on a second, different fixed frequency.
Plain-language scope (from the excerpt): The second frequency is said to nearly double the number of multiplexed channels without increasing intra-zone interference, since the two frequencies differ. Means for handing over between the first and second channel multitudes (and vice versa) let the mobile be placed on the frequency offering the best reception and reduce the rate of same-frequency softer handovers between sectors. A possible embodiment briefly nulls the mobile's current-frequency signal to measure received power on the reserve frequency.
Not established by this excerpt:
- The full text of the claims — no claim language is reproduced here, so precise claim scope, including the recited "means" elements, cannot be stated.
- The number and exact wording of claims.
- Any prior-art references, prosecution history, or litigation (not addressed; excluded by instruction).
- Whether the listed assignees/status are legally accurate — the source itself labels these as assumptions, not legal conclusions.
- Embodiments beyond the one measurement approach mentioned.
Generated 10/1/2026, 10:03:51 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Derivative works
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