Vestigial identification for co-channel interference in cellular communications
First Claim
1. A vestigial identification system for transmitting information in a cellular communications network employing frequency reuse, said vestigial identification system comprising:
- means for generating a message including a plurality of information bits;
means for generating an identifier including a plurality of identification bits indicating a source of said message;
means for encoding said message and said identifier to generate a composite parity check including a plurality of parity bits;
means for combining said message and said composite parity check to form a code word; and
means for transmitting said code word, wherein said plurality of identification bits identify said transmitting means.
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Accused Products
Abstract
A vestigial identification system is provided for transmitting information in a cellular communications network employing frequency reuse. The vestigial identification system enables a receiver to detect both bit errors and interfering messages to avoid call disruption. A composite parity check is produced by encoding message data and a site identifier via an encoder. A transmitter conveys a code word, formed at a code word generator by combining the composite parity check with the message data, to a receiver. At the receiver, an encoder forms an error detection parity check by encoding both the message data from the code word and the site identifier. An error detector compares the composite parity check from the transmitted code word to the error detection parity check, and generates an error if the parity checks are not identical to one another, enabling rejection of the message by the receiver.
41 Citations
16 Claims
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1. A vestigial identification system for transmitting information in a cellular communications network employing frequency reuse, said vestigial identification system comprising:
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means for generating a message including a plurality of information bits; means for generating an identifier including a plurality of identification bits indicating a source of said message; means for encoding said message and said identifier to generate a composite parity check including a plurality of parity bits; means for combining said message and said composite parity check to form a code word; and means for transmitting said code word, wherein said plurality of identification bits identify said transmitting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A vestigial identification method for transmitting information in a cellular communications network employing frequency reuse, said vestigial identification method comprising the steps of:
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generating a message including a plurality of information bits; generating an identifier including a plurality of identification bits indicating a source of said message; encoding said message and said identifier to generate a composite parity check including a plurality of parity bits; combining said message and said composite parity check to form a code word; and transmitting said code word, wherein said plurality of identification bits identify the source of the transmission. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification