Abstract
A space diversity arrangement for digital mobile telephone networks consisting of at least two antennas one antenna being part of a primary unit (or master) and the other being part of a diversity unit (or slave) each unit having processing arrangements which detects the quality of the audio signal received in the respective antenna the quality consists of factors like connection quality Auto gain control (AGC) level and parity error; the primary unit is able to compare the quality of the audio signal received in each antenna wherein the higher quality signal is selected and broadcast to the telephone network.
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| 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
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Technologies
Multiple access
Product
Use Cases
Services
Claim
1. Eine Raumdiversity-Anordnung für drahtlose
Telefonsysteme, wenigstens bestehend aus
- einer Mehrzahl von Antenneneinheiten, welche eine Primär-
und wenigstens eine Diversity-Einheit einschlieÃx9fen, wobei
jeder Einheit eine Antenne zugeordnet wird; - wobei jede Einheit Einrichtungen zur Erfassung der DatenÂxad
güte besitzt, die Datengüte umfassend Parameter, wie VerbinÂxad
dungsgüte, Pegel der automatischen
Verstärkerregelung (AGC) und Paritätsfehler des Audiosignals; - Einrichtungen zum Vergleich der Datengüte der DiversityÂxad
einheit mit der Datengüte der Primäreinheit; - Einrichtungen zur Auswahl des Audiosignals mit der
bevorzugten Datengüte; und - Einrichtungen zur Ãx9cbertragung des ausgewählten
Audiosignals ins Telefonsystem.
2. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f die ursprünglichen Audiosignale zu den
Antenneneinheiten von den entsprechenden Antennen übertragen
werden.
3. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f die ursprünglichen Audiosignale von den
Antenneneinheiten zu den entsprechenden Antennen übertragen
werden.
4. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f die Antennen komprimierte, digitale
Audiosignale empfangen, wobei jede Einheit mit Einrichtungen
zum Zusammensetzen und Expandieren der von der jeweiligen
Antenne empfangenen Signale ausgestattet ist.
5. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f die Antennen komprimierte, digitale
Audiosignale empfangen, wobei nur die Primäreinheit mit
Einrichtungen zum Zusammensetzen und Expandieren der
komprimierten Signale, und zur Ausstrahlung dieser im
Telefonsystem ausgestattet ist.
6. Die Raumdiversity-Anordnung nach Anspruch 1, eingesetzt
in einer Endstelleneinrichtung (Teilnehmereinrichtung) .
7. Die Raumdiversity-Anordnung nach Anspruch 7, eingesetzt
in einer Landfunkstelle.
8. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f die Primäreinheit mit einer
Schalteranordnung steuernd verbunden ist, wobei die
Primäreinheit die Güte der Information verwendet, um die
Schalteranordnung zu betätigen und um einen Pfad für das
ausgewählte Audiosignal von der Primäreinheit zum
Telefonsystem hin zu formen (öffnen).
9. Die Raumdiversity-Anordnung nach Anspruch 1, dadurch
gekennzeichnet, daÃx9f das ausgewählte Audiosignal über den Pfad
einem Multiplexer zugespielt wird, welcher das Signal dem
Telefonsystem zuleitet.']
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SUMMARY
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