IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0767434
(2007-06-22)
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등록번호 |
US-8611868
(2013-12-17)
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발명자
/ 주소 |
- Sinnarajah, Ragulan
- Wang, Jun
- Chen, Tao
- Hsu, Raymond T.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
14 |
초록
▼
A wireless communications network includes roving subscriber-stations and base stations receiving broadcast programs from a content server. A subscriber-station evaluates whether a desired program is available from a subject base station. According to this evaluation, the subscriber-station takes st
A wireless communications network includes roving subscriber-stations and base stations receiving broadcast programs from a content server. A subscriber-station evaluates whether a desired program is available from a subject base station. According to this evaluation, the subscriber-station takes steps to (1) receive the desired program on a shared channel for reception by multiple subscriber-stations, or (2) initiate base station delivery of the desired program to the subscriber-station on an individual channel. Responsive to a message from a subject subscriber-station identifying a desired program, a base station either (1) continues transmitting the desired program upon a shared channel, (2) starts transmitting the desired program on a shared channel, or (3) sends the subject subscriber-station a channel assignment message and commences transmission of the desired program on the assigned individual channel.
대표청구항
▼
1. A method of operating a wireless subscriber-station in a wireless communications network that includes base stations receiving various broadcast programs from a content server, comprising: a subscriber-station configured to receive a message identifying individual channel availability and shared
1. A method of operating a wireless subscriber-station in a wireless communications network that includes base stations receiving various broadcast programs from a content server, comprising: a subscriber-station configured to receive a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both; andthe subscriber-station configured to initiate reception of the desired broadcast program on a shared channel when the desired broadcast program is available via the shared channel by sending a start-service message to the base station and initiating reception of the desired broadcast program on an individual channel when the desired broadcast program is unavailable via a shared channel. 2. A wireless subscriber-station apparatus, comprising: a multichannel transceiver;a manager coupled to the transceiver and user interface to manage operation of the transceiver, and to perform operations to manage receipt of broadcast content services, the operations comprising:receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;initiating reception of the desired broadcast program on a shared channel when the desired broadcast program is available via the shared channel by sending a start-service message to the base station and initiating reception of the desired broadcast program on an individual channel when the desired broadcast program is unavailable via a shared channel. 3. A wireless subscriber-station apparatus, comprising: first means for multichannel transceiving;second means coupled to the first means for managing operation of the first means, and for performing operations for managing receipt of broadcast content services, the operations comprising: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;initiating reception of the desired broadcast program on a shared channel when the desired broadcast program is available via the shared channel by sending a start-service message to the base station and initiating reception of the desired broadcast program on an individual channel when the desired broadcast program is unavailable via a shared channel. 4. A non-transitory signal bearing medium tangibly embodying a program of machine-readable instructions executable by a digital data processor to perform operations to operating a wireless subscriber-station in a wireless communications network, the operations comprising: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;initiating reception of the desired broadcast program on a shared channel when the desired broadcast program is available via the shared channel by sending a start-service message to the base station and initiating reception of the desired broadcast program on an individual channel when the desired program is unavailable via a shared channel. 5. An apparatus to perform operations to operate a wireless subscriber-station in a wireless communications network, the apparatus comprising a processor and a memory operably coupled thereto including instructions stored therein for executing operations, the operations including: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;initiating reception of the desired broadcast program on a shared channel when the desired broadcast program is available via the shared channel by sending a start-service message to the base station and initiating reception of the desired broadcast program on an individual channel when the desired broadcast program is unavailable via a shared channel. 6. A method of operating a wireless subscriber station in a wireless communications network that includes base stations receiving various broadcast programs from a content server, comprising: a subscriber-station configured to receive a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;the subscriber-station configured to communicate with the base station to initiate transmission of the desired broadcast program to the subscriber-station on an individual channel for sole use by the subscriber-station when the desired broadcast program is unavailable via a shared channel; andprior to handoff of the subscriber-station to a target base station, the subscriber-station configured to receive from the base station an updated broadcast parameters message listing broadcast programs available from the target base station. 7. A base station for use in a wireless communications network, comprising:a transceiver;a digital data processor, coupled to the transceiver, programmed to perform broadcast content delivery operations including: transmitting a desired program to a subscriber-station on an individual channel for sole use by the subscriber station when the desired program is unavailable via a shared channel;updating broadcast program information during transmission of the desired program to the subscriber-station upon an individual channel, andprior to handoff of a departing subscriber-station to a target base station, sending the departing subscriber-station an updated broadcast parameters message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, based on the message received from the target base station prior to initiating reception and to determine from the message whether the desired broadcast program is available on an individual channel from the target base station, shared channels from the target base station, or both. 8. A wireless subscriber-station apparatus, comprising: a multichannel transceiver;a manager coupled to the transceiver and user interface to manage operation of the transceiver, and to perform operations to manage receipt of broadcast content services, the operations comprising: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both:in accordance with results of the evaluation operations, performing operations including: communicating with the base station by sending a message to initiate transmission of the desired program to the subscriber-station on an individual channel for sole use by the subscriber-station when the desired broadcast program is unavailable via a shared channel; andprior to handoff of the subscriber-station to a target base station, receiving from the base station an updated broadcast parameters message listing broadcast programs available from the target base station. 9. A wireless subscriber-station apparatus, comprising: first means for multichannel transceiving;second means coupled to the first means for managing operation of the first, and for performing operations for managing receipt of broadcast content services, the operations comprising: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;performing operations including: sending a message to base station to initiate transmission of the desired program to the subscriber-station on an individual channel for sole use by the subscriber-station when the desired broadcast program is unavailable via a shared channel; andprior to handoff of the subscriber-station to a target base station, receiving from the base station an updated broadcast parameters message listing broadcast programs available from the target base station. 10. A non-transitory signal bearing medium tangibly embodying a program of machine-readable instructions executable by a digital data processor to perform operations to operating a wireless subscriber-station in a wireless communications network, the operations comprising: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;performing operations including: sending a message to the base station to initiate transmission of the desired broadcast program to the subscriber-station on an individual channel for sole use by the subscriber-station when the desired broadcast program is unavailable via a shared channel; andprior to handoff of the subscriber-station to a target base station, receiving from the base station an updated broadcast parameters message listing broadcast programs available from the target base station. 11. An apparatus to perform operations to operate a wireless subscriber-station in a wireless communications network, the apparatus comprising a processor and a memory operably coupled thereto including instructions stored therein for executing operations, the operations including: receiving a message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, from a base station prior to initiating reception and to determine from the message whether a desired broadcast program is available on an individual channel from the base station, shared channels from the base station, or both;performing operations including: sending a message to the base station to initiate transmission of the desired broadcast program to the subscriber-station on an individual channel for sole use by the subscriber-station when the desired broadcast program is unavailable via a shared channel; andprior to handoff of the subscriber-station to a target base station, receiving from the base station an updated broadcast parameters message listing broadcast programs available from the target base station. 12. A method of operating a base station in a wireless communications network, comprising: receiving a number of broadcast programs from a content server;receiving a message indicating presence of a subscriber-station and a determination based on a system transmitted message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, of whether to receive a desired broadcast program on an individual or shared channel;responsive to channel availability information in the message, deciding between alternative operations including at least: continuing transmission of the desired broadcast program upon a shared channel;starting to transmit the desired broadcast program on a shared channel;sending the subscriber-station a message assigning an individual channel for sole use by the subscriber-station, and commencing transmission of the desired program on the assigned, individual channel when the desired broadcast program is unavailable via a shared channel;performing a decided one of the alternative operations. 13. The method of claim 12 further comprising the base station providing repeated, universally addressed transmission of a broadcast parameters message listing broadcast programs available from the base station. 14. The method of claim 12 further comprising: the base station providing repeated, universally addressed transmission of an abbreviated broadcast parameters message containing an indicator signaling broadcast programs that are available from the base station on individual channels and omitting any listing of other broadcast programs that are not available from the base station; andthe base station providing upon request by subscriber-stations information including at least one of the following: (1) a list of broadcast programs available from the base station, (2) an indication of whether a desired broadcast program is available from the base station. 15. The method of claim 12 further comprising the base station providing upon request by subscriber-stations information including at least one of the following: (1) a list of broadcast programs available from the base station, (2) an indication of whether a desired broadcast program is available from the base station. 16. The method of claim 12 further comprising updating broadcast program information while the base station is transmitting a desired program to subscriber -stations upon individual channels, the updating comprising at least one of the following: transmitting a broadcast parameters message listing broadcast programs available from the base station, the transmission occurring on a channel available to subscriber-stations even while receiving upon the individual channels;prior to handoff, of a departing subscriber-station to a target base station, sending the departing subscriber-station an updated broadcast parameters message listing broadcast programs available from the target base station;responsive to subscriber-station requests, transmitting at least some of the broadcast parameters message to the requesting subscriber-station. 17. The method of claim 12 wherein: the base station receiving broadcast programs from the content server comprises, for each broadcast program, the base station receiving a single incoming information stream; andthe method further comprises the base station replicating the information stream for transmission to each of more than one subscriber-station. 18. The method of claim 12 wherein: the base station receiving broadcast programs from the content server comprises, for each broadcast program, the base station receiving multiple incoming information streams; andthe method further comprises the base station redirecting each incoming information stream to a different subscriber-station. 19. A base station for use in a wireless communications network, comprising:a transceiver;a digital data processor, coupled to the transceiver, programmed to perform broadcast content delivery operations including: receiving a number of broadcast programs from a content server;receiving a message indicating presence of a subscriber-station and a determination based on a system transmitted message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification, of whether to receive a desired broadcast program on an individual or shared channel;responsive to channel availability information in the message, deciding between alternative operations including at least: continuing transmission of the desired program upon a shared channel;starting to transmit the desired program on a shared channel;sending the subscriber-station a message assigning an individual channel for sole use by the subscriber-station, and commencing transmission of the desired program on the assigned, individual channel when the desired program is unavailable via a shared channel;performing a decided one of the alternative operations. 20. A base station for use in a wireless communications network, comprising: first means for transceiving;second means for digital data processing, programmed to perform broadcast content delivery operations including: receiving a number of broadcast programs from a content server;receiving a message indicating presence of a subscriber-station and a determination based on a system transmitted message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification;responsive to channel availability information in the message, deciding between alternative operations including at least: continuing transmission of the desired broadcast program upon a shared channel;starting to transmit the desired broadcast program on a shared channel;sending the subscriber-station a message assigning an individual channel for sole use by the subscriber-station, and commencing transmission of the desired broadcast program on the assigned, individual channel when the desired broadcast program is unavailable via a shared channel;performing a decided one of the alternative operations. 21. A non-transitory signal bearing medium tangibly embodying a program of machine-readable instructions executable by a digital data processor to perform operations to operate a base station to delivery broadcast content in a wireless communications network, the operations comprising: receiving a number of broadcast programs from a content server;receiving a message indicating presence of a subscriber-station and a determination based on a system transmitted message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification;responsive to channel availability information in the message, deciding between alternative operations including at least: continuing transmission of the desired broadcast program upon a shared channel for common reception by multiple subscriber-stations;starting to transmit the desired broadcast program on a shared channel for common reception by multiple subscriber-stations;sending the subscriber-station a message assigning an individual channel for sole use by the subscriber-station, and commencing transmission of the desired broadcast program on the assigned, individual channel when the desired broadcast program is unavailable via a shared channel;performing a decided one of the alternative operations. 22. An apparatus to perform operations to operate a base station to delivery broadcast content in a wireless communications network, the apparatus comprising a processor and a memory operably coupled thereto including instructions stored therein for executing operations, the operations including: receiving a number of broadcast programs from a content server;receiving a message indicating presence of a subscriber-station and a determination based on a system transmitted message identifying individual channel availability and shared channel availability, the individual channel availability identification independent of the shared channel availability identification:responsive to channel availability information in the message, deciding between alternative operations including at least: continuing transmission of the desired broadcast program upon a shared channel for common reception by multiple subscriber-stations;starting to transmit the desired broadcast program on a shared channel for common reception by multiple subscriber-stations;sending the subscriber-station a message assigning an individual channel for sole use by the subscriber-station, and commencing transmission of the desired broadcast program on the assigned, individual channel when the desired broadcast program is unavailable via a shared channel;performing a decided one of the alternative operations.
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