Abstract
Synchronized broadcast transmits a same broadcast content using a same waveform from multiple transmitters. Transmitters each apply a same spreading code for broadcast transmissions. In a spread-spectrum communication system having a time division multiplexed forward link, a synchronized broadcast transmission is inserted into a broadcast slot. One embodiment employs an Orthogonal Frequency Divisional Multiplex (OFDM) waveform for the synchronized broadcast. An OFDM receiver is then used to process the received synchronized broadcast transmission. An alternate embodiment implements a broadcast Pseudo-random Noise (PN) code for use by multiple transmitters. An equalizer is then employed to estimate the synchronized broadcast transmission.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 02/03/2010 | ISLD-201004-005 | QUALCOMM INC | No | Family Member | ||||
| Not Available | 02/03/2010 | ISLD-201004-005 | QUALCOMM INC | No | Family Member | ||||
| 4G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC | No | Family Member | ||||
| 4G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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Yes | Basis Patent | |||
| 4G | 12/03/2020 | ISLD-202003-022 | QUALCOMM INC | No | Family Member | ||||
| 5G | 31/05/2022 | ISLD-202205-072 | QUALCOMM INC | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
| All Granted Patents In Patent Family : | ---- |
| All Pending Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US2005175070A1 | 3G | 02/03/2010 | ISLD-201004-005 | QUALCOMM INC | Yes | Basis Patent | ||||
| US2005175070A1 | Not Available | 02/03/2010 | ISLD-201004-005 | QUALCOMM INC | Yes | Basis Patent | ||||
| US2005175070A1 | 4G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
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S1
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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S1
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Yes | Basis Patent | |||
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No | Family Member | |||
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S1
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No | Family Member | |||
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No | Family Member | |||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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Technologies
Broadcast/Multicast
Product
Use Cases
Wireless communication
Services
Claim
1. An access network apparatus, comprising:
a first transmitter;
a first modulator to modulate a first waveform associated with unicast transmissions, the first waveform specific to the first transmitter;
a broadcast modulator to modulate a second waveform associated with broadcast transmissions, the second waveform used by both the first transmitter and at least a second transmitter distinct from the first transmitter to transmit the broadcast transmissions; and
a modulation controller to select, in response to a type of information to be transmitted by the first transmitter, the first modulator or the broadcast modulator.', 'a first transmitter;', 'a first modulator to modulate a first waveform associated with unicast transmissions, the first waveform specific to the first transmitter;', 'a broadcast modulator to modulate a second waveform associated with broadcast transmissions, the second waveform used by both the first transmitter and at least a second transmitter distinct from the first transmitter to transmit the broadcast transmissions; and', 'a modulation controller to select, in response to a type of information to be transmitted by the first transmitter, the first modulator or the broadcast modulator.
2. The access network apparatus of claim 1, wherein the modulation controller comprises:
a first path to process unicast transmissions that includes a first encoder and a first interleaver; and
a second path to process broadcast transmissions that includes a second encoder and a second interleaver.', 'a first path to process unicast transmissions that includes a first encoder and a first interleaver; and', 'a second path to process broadcast transmissions that includes a second encoder and a second interleaver.
3. The access network apparatus of claim 2, wherein the modulation controller comprises a selecting unit configured to route broadcast information to the broadcast modulator and to route unicast information to the first modulator.
4. The access network apparatus of claim 3, wherein the first transmitter is configured to prepare modulated information to be transmitted in a time-slot format, wherein the broadcast information and the unicast information are time division multiplexed into a transmission time slot of the time-slot format.
5. The access network apparatus of claim 4, wherein the transmission time slot includes a broadcast pilot.
6. The access network apparatus of claim 1, wherein the first modulator is a code division modulator and the broadcast modulator is an orthogonal frequency division modulator.
7. The access network apparatus of claim 1, wherein the second waveform is transmitted at least in part during an interlace reserved for the broadcast transmissions.
8. The access network apparatus of claim 7, wherein one or more identical physical layer packets are transmitted by the first transmitter and by the second transmitter during the interlace.
9. The access network apparatus of claim 1, wherein the second waveform corresponds to a spreading code used by a first base station that includes the first transmitter and used by a second base station that includes the second transmitter
10. The access network apparatus of claim 9, wherein the spreading code is a pseudonoise (PN) code
11. An access terminal apparatus, comprising:
means for demodulating unicast transmissions;
means for demodulating broadcast transmissions that include a first broadcast transmission from a first base station and a second broadcast transmission from a second base station, wherein the first broadcast transmission and the second broadcast transmission are processed by the means for demodulating the broadcast transmissions as multipath components of a same signal; and
means for selecting, in response to a type of information received, the means for demodulating unicast transmissions or the means for demodulating broadcast transmissions.', 'means for demodulating unicast transmissions;', 'means for demodulating broadcast transmissions that include a first broadcast transmission from a first base station and a second broadcast transmission from a second base station, wherein the first broadcast transmission and the second broadcast transmission are processed by the means for demodulating the broadcast transmissions as multipath components of a same signal; and', 'means for selecting, in response to a type of information received, the means for demodulating unicast transmissions or the means for demodulating broadcast transmissions
12. The access terminal apparatus of claim 11, wherein the means for demodulating unicast transmissions and the means for demodulating broadcast transmissions are compatible with a time division multiplex forward link format
13. The access terminal apparatus of claim 11, wherein the means for demodulating unicast transmissions is configured to demodulate code division modulated information
14. The access terminal apparatus of claim 13, wherein the means for demodulating broadcast transmissions is configured to demodulate orthogonal frequency division modulated information
15. A computer-implemented method, comprising:
modulating, by a first modulator, unicast information using a first waveform associated with unicast transmissions, the first waveform specific to a first transmitter;
modulating, by a broadcast modulator, broadcast information using a second waveform associated with broadcast transmissions, the second waveform used by both the first transmitter and at least a second transmitter distinct from the first transmitter to transmit the broadcast transmissions; and
selecting, by a modulation controller and in response to a type of information to be transmitted, the first modulator or the broadcast modulator.', 'modulating, by a first modulator, unicast information using a first waveform associated with unicast transmissions, the first waveform specific to a first transmitter;', 'modulating, by a broadcast modulator, broadcast information using a second waveform associated with broadcast transmissions, the second waveform used by both the first transmitter and at least a second transmitter distinct from the first transmitter to transmit the broadcast transmissions; and', 'selecting, by a modulation controller and in response to a type of information to be transmitted, the first modulator or the broadcast modulator
16. The computer-implemented method of claim 15, wherein the modulation controller comprises:
a first path to process the unicast transmissions based on selection of the first modulator, wherein the first path includes a first encoder and a first interleaver; and
a second path to process the broadcast transmissions based on selection of the broadcast modulator, wherein the second path includes a second encoder and a second interleaver.', 'a first path to process the unicast transmissions based on selection of the first modulator, wherein the first path includes a first encoder and a first interleaver; and', 'a second path to process the broadcast transmissions based on selection of the broadcast modulator, wherein the second path includes a second encoder and a second interleaver
17. The computer-implemented method of claim 16, wherein selecting the first modulator or the broadcast modulator further comprises one of:
routing, by a selecting unit, the broadcast information to the broadcast modulator; and
routing, by the selecting unit, the unicast information to the first modulator.', 'routing, by a selecting unit, the broadcast information to the broadcast modulator; and', 'routing, by the selecting unit, the unicast information to the first modulator
18. The computer-implemented method of claim 17, further comprising preparing, by a transmit unit, modulated information to be transmitted in a time-slot format, wherein the broadcast information and the unicast information are time division multiplexed into a transmission time slot of the time-slot format
19. The computer-implemented method of claim 18, wherein the transmission time slot includes a broadcast pilot.
20. The computer-implemented method of claim 15, wherein the first modulator is a code division modulator, and wherein the broadcast modulator is an orthogonal frequency division modulator.
21. A non-transitory computer-readable medium storing instructions operable, when executed by a processor, to cause the processor to:
demodulate unicast transmissions;
demodulate broadcast transmissions including a first broadcast transmission from a first base station and a second broadcast transmission from a second base station, wherein the first broadcast transmission and the second broadcast transmission are processed by the processor as multipath components of a same signal; and
select, in response to a type of information received, demodulation of the unicast transmissions or demodulation of the broadcast transmissions.', 'demodulate unicast transmissions;', 'demodulate broadcast transmissions including a first broadcast transmission from a first base station and a second broadcast transmission from a second base station, wherein the first broadcast transmission and the second broadcast transmission are processed by the processor as multipath components of a same signal; and', 'select, in response to a type of information received, demodulation of the unicast transmissions or demodulation of the broadcast transmissions.
22. The non-transitory computer-readable medium of claim 21, wherein the instructions are further operable, when executed by the processor, to cause the processor to demodulate the broadcast transmissions using received information.
23. The non-transitory computer-readable medium of claim 22, wherein the instructions are further operable, when executed by the processor, to cause the processor to identify a broadcast pilot signal of the broadcast transmissions and to estimate the received information based on the broadcast pilot signal.
24. The non-transitory computer-readable medium of claim 23, wherein the instructions are further operable, when executed by the processor, to cause the processor to equalize broadcast information and to equalize traffic information.
25. The non-transitory computer-readable medium of claim 22, wherein the broadcast transmissions include orthogonal frequency division modulated information.
26. The non-transitory computer-readable medium of claim 21, wherein the instructions are compatible with a time division multiplex forward link format associated with a spread-spectrum communication system.
27. The non-transitory computer-readable medium of claim 21, wherein the unicast transmissions include code division modulated information.']
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SUMMARY
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Patent number:US8619835B2
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.