Interoperability and coexistence between two disparate communication systems
First Claim
1. A method of avoiding transmission interference between a first wireless system operating at a first range of frequencies of operation and a second wireless system operating at a second range of frequencies of operation, said first wireless system and said second wireless system being co-located, said method comprising:
- passing radio status information from said first wireless system to said second wireless system;
delaying transmission by said second radio system based on medium status information provided by said first wireless system;
wherein one of said first wireless system and said second wireless system transmits in RF time slots; and
wherein concurrent radio transmission by both said first wireless system and said second wireless system is avoided.
1 Assignment
0 Petitions
Accused Products
Abstract
Combined IEEE 802.11 (WiFi) and Bluetooth transceiver and method of operation employing busy signals to monitor when transmissions of each type are being transmitted or received, and employing a synchronizing signal to synchronize the use of time slots. In one embodiment, a simple two-wire interface is exposed linking Bluetooth and IEEE 802.11 radio systems. In another embodiment, the Bluetooth and IEEE 802.11 services can exchange information including scheduling, mode of operation, channel usage and device state via a shared resource such as a memory, referred to as a ‘mailbox’.
116 Citations
24 Claims
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1. A method of avoiding transmission interference between a first wireless system operating at a first range of frequencies of operation and a second wireless system operating at a second range of frequencies of operation, said first wireless system and said second wireless system being co-located, said method comprising:
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passing radio status information from said first wireless system to said second wireless system;
delaying transmission by said second radio system based on medium status information provided by said first wireless system;
wherein one of said first wireless system and said second wireless system transmits in RF time slots; and
wherein concurrent radio transmission by both said first wireless system and said second wireless system is avoided. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device incorporating a first wireless system operating at a first range of frequencies of operation and a second wireless system operating at a second range of frequencies of operation, said first wireless system and said second wireless system being co-located, comprising:
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a first busy signal provided by said first wireless system to said second wireless system over a direct communication link indicating a timing of a reception on said first wireless system;
a second busy signal provided by said second wireless system to said first wireless system over a direct communication link indicating a timing of a reception on said second wireless system; and
a controller responsive to said first busy signal, said controller being configured to cause said second wireless system to delay transmission due to an active transmission state of said first wireless system;
wherein one of said first wireless system and said second wireless system transmits in RF time slots. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for co-locating a first wireless system operating at a first range of frequencies of operation and a second wireless system operating at a second range of frequencies of operation, comprising:
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providing a first busy signal by said first wireless system to said second wireless system over a direct communication link indicating a timing of active reception on said first wireless system;
providing a second busy signal by said second wireless system to said first wireless system over said direct communication link indicating a timing of active reception on said second wireless system; and
a controller responsive to said first busy signal, said controller being configured to cause said second wireless system to delay transmission due to an active transmission state of said first wireless system;
wherein one of said first wireless system and said second wireless system transmits in RF time slots. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification