Multidiversity handoff in a wireless broadcast system
First Claim
1. A method of maintaining signal reception at a wireless mobile station receiver in a wireless broadcast network, the method comprising:
- the wireless mobile station receiver receiving an orthogonal frequency division multiplex (OFDM) signal from a first transmitter of a plurality of transmitters in the wireless broadcast network, each of the plurality of transmitters transmitting an identical OFDM signal synchronously, the OFDM signal comprising a plurality of individual content data streams that are coarsely interleaved into an aggregate data stream, each of the plurality of individual content data streams including a continuous stream of a corresponding program, wherein the OFDM signal includes one connection identification value associated with the aggregate data stream;
synchronizing the wireless mobile station receiver to the OFDM signal received from the first transmitter of the plurality of transmitters; and
the wireless mobile station receiver receiving the OFDM signal simultaneously from a second transmitter of the plurality of transmitters while receiving the OFDM signal from the first transmitter of the plurality of transmitters, performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated.
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Accused Products
Abstract
A wireless broadcast system that collects content for distribution over a wireless communication network. The content stream is encapsulated into a stream of transport packets for broadcast over the wireless communication link. The stream of transport packets are simultaneously broadcast as part of an identical signal from a plurality of synchronized transmitters in a single frequency network. A receiver acquires the broadcast signal and synchronizes to the signal. Once the receiver is synchronized to one of the transmitters in the single frequency network, the receiver can receive signals from any, or multiple, of the transmitters in the network without re-synchronizing.
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Citations
24 Claims
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1. A method of maintaining signal reception at a wireless mobile station receiver in a wireless broadcast network, the method comprising:
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the wireless mobile station receiver receiving an orthogonal frequency division multiplex (OFDM) signal from a first transmitter of a plurality of transmitters in the wireless broadcast network, each of the plurality of transmitters transmitting an identical OFDM signal synchronously, the OFDM signal comprising a plurality of individual content data streams that are coarsely interleaved into an aggregate data stream, each of the plurality of individual content data streams including a continuous stream of a corresponding program, wherein the OFDM signal includes one connection identification value associated with the aggregate data stream; synchronizing the wireless mobile station receiver to the OFDM signal received from the first transmitter of the plurality of transmitters; and the wireless mobile station receiver receiving the OFDM signal simultaneously from a second transmitter of the plurality of transmitters while receiving the OFDM signal from the first transmitter of the plurality of transmitters, performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile station comprising:
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a receiving module configured to receive an orthogonal frequency division multiplex (OFDM) signal broadcast from a first transmitter of a plurality of transmitters in a wireless broadcast network, wherein each of the plurality of transmitters is configured to transmit an identical OFDM signal synchronously, wherein the OFDM signal comprises a plurality of individual content data streams that are coarsely interleaved into an aggregate data stream, wherein each of the plurality of individual content data streams includes a continuous stream of a corresponding program, wherein only one connection identification value is associated with the aggregate data stream; and a processor configured to synchronize the mobile station to the OFDM signal received by the receiving module from the first transmitter of the plurality of transmitters; wherein the receiving module is further configured to receive the OFDM signal from a second transmitter of the plurality of transmitters in the wireless broadcast network simultaneous to receiving the OFDM signal from the first transmitter of the plurality of transmitters, wherein performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A network comprising:
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a single frequency network adapter configured to receive transport stream packets and to coarsely interleave the transport stream packets into an aggregate stream of a plurality of individual content data streams, wherein each of the plurality of individual content data streams includes a continuous stream of a corresponding program, wherein only one connection identification value is associated with the aggregate stream; a plurality of transmitters configured to receive the aggregate stream from the single frequency network adapter, and to synchronously broadcast a wireless signal including the aggregate stream, such that each of the plurality of transmitters broadcasts an identical wireless signal; and a receiver configured to receive the wireless signal from a first transmitter of the plurality of transmitters, to synchronize to the wireless signal from the first transmitter of the plurality of transmitters, and to receive the wireless signal from a second transmitter of the plurality of transmitters simultaneous to receiving the identical wireless signal from the first transmitter of the plurality of transmitters, wherein performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated. - View Dependent Claims (17, 18, 19)
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20. A method of broadcasting, comprising:
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receiving encapsulated transport stream packets and coarsely interleaving the transport stream packets into an aggregate stream of a plurality of individual content data streams, wherein each of the plurality of individual content data streams includes a continuous stream of a corresponding program, wherein only one connection identification value is associated with the aggregate stream; synchronously broadcasting a wireless signal including the aggregate stream from a plurality of transmitters such that each of the plurality of transmitters simultaneously broadcasts an identical wireless signal; receiving, at a wireless receiver, the wireless signal from a first transmitter of the plurality of transmitters; synchronizing the wireless receiver to the wireless signal received from the first transmitter of the plurality of transmitters; and receiving, at the wireless receiver, the wireless signal from a second transmitter of the plurality of transmitters simultaneous to receiving the wireless signal from the first transmitter of the plurality of transmitters, wherein performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated. - View Dependent Claims (21, 22, 23)
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24. One or more non-transitory computer readable media storing a set of instructions for execution by one or more processors processor, the set of instructions comprising:
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a first receiving code segment for receiving an orthogonal frequency division multiplex (OFDM) signal from a first transmitter of a plurality of transmitters in a wireless broadcast network, wherein each of the plurality of transmitters transmits an identical OFDM signal synchronously, wherein the OFDM signal comprises a plurality of individual content data streams that are coarsely interleaved into an aggregate data stream, wherein each of the plurality of individual content data streams includes a continuous stream of a corresponding program, wherein only one connection identification value is associated with the aggregate data stream; a synchronizing code segment for synchronizing a wireless mobile station receiver to the OFDM signal received from the first transmitter of the plurality of transmitters; and a second receiving code segment for the OFDM signal from a second transmitter of the plurality of transmitters simultaneous to receiving the identical OFDM signal from the first transmitter of the plurality of transmitters, wherein performing additional synchronization of the receiver with the second transmitter of the plurality of transmitters is eliminated.
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Specification