Message fragmenting in a time diversity radio system
First Claim
1. In a time diversity paging system, having at least one transmitter and at least one of a plurality of selective call receivers operating in a first mode where each of the plurality of selective call receivers actively decode on preassigned time slots, a method for encoding and transmitting at a base station a message longer than a predetermined time slot, comprising the steps of:
- receiving the message from a caller at the base station;
queuing the message;
encoding a first fragment of the message and remaining fragments of the message;
repeatedly transmitting the first fragment in a plurality of time slots, the number of time slots equaling a desired number of repeat transmissions and wherein the first fragment contains instructions for decoding the remaining fragments in a second mode by at least one of the plurality of selective call receivers; and
repeatedly transmitting remaining portions of the message in subsequent time slots, wherein the at least one of a plurality of selective call receivers decodes the remaining portions of the message in accordance with instructions in the first fragment.
5 Assignments
0 Petitions
Accused Products
Abstract
A time diversity communication system (150) comprises a messaging terminal (154), a queue (156) at the messaging terminal for queuing incoming messages, an encoder (158) for encoding a first fragment of a message and the remaining fragments of a message, a transmitter (160) for repeatedly transmitting the first fragment in a plurality of time slots to at least one selective call receiver (201) operating in a first mode, the number of time slots equaling a desired number of repeat transmissions and wherein the first fragment contains instructions for decoding the remaining fragments in a second mode by the selective call receiver, the transmitter (160) also repeatedly transmits the remaining portions of the message in subsequent time slots and at least one selective call receiver that decodes the first fragment and remaining fragments of the message in accordance with instructions in the decoded first fragment.
23 Citations
25 Claims
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1. In a time diversity paging system, having at least one transmitter and at least one of a plurality of selective call receivers operating in a first mode where each of the plurality of selective call receivers actively decode on preassigned time slots, a method for encoding and transmitting at a base station a message longer than a predetermined time slot, comprising the steps of:
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receiving the message from a caller at the base station; queuing the message; encoding a first fragment of the message and remaining fragments of the message; repeatedly transmitting the first fragment in a plurality of time slots, the number of time slots equaling a desired number of repeat transmissions and wherein the first fragment contains instructions for decoding the remaining fragments in a second mode by at least one of the plurality of selective call receivers; and repeatedly transmitting remaining portions of the message in subsequent time slots, wherein the at least one of a plurality of selective call receivers decodes the remaining portions of the message in accordance with instructions in the first fragment. - View Dependent Claims (2, 3, 4)
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5. In a time diversity paging system, having at least one transmitter and at least one of a plurality of selective call receivers operating in a first mode requiring each of the plurality of selective call receivers to actively decode on preassigned time slots, a method for decoding a message longer than a predetermined time slot and separated into fragments, comprising the steps at one of the plurality of selective call receivers of:
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operating in a first mode to decode at least a first fragment of the message which is repeatedly transmitted within preassigned time slots, the number of the time slots equaling a desired number of repeat transmissions and wherein the first fragment contains instructions for decoding remaining fragments in a second mode at the one of the plurality of selective call receivers; and repeatedly decoding the remaining portions of the message in subsequent time slots, wherein the one of the plurality of selective call receivers decodes the remaining portions of the message in accordance with the instructions in the first fragment. - View Dependent Claims (6, 7, 8)
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9. In a time diversity system, a selective call receiver capable of receiving messages longer than a predetermined time slot and sectioned into at least a first fragment and remaining fragments, the selective call receiver operating in a first mode requiring the selective call receiver to actively decode the first fragment repeatedly on preassigned time slots and operating in a second mode requiring the selective call receiver to actively decode the remaining fragments in accordance with instructions within the first fragment, comprising:
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a receiver module capable of receiving the first fragment on preassigned time slots; a decoder module coupled to the receiver module for decoding the first fragment and for decoding the remaining fragments in accordance with instructions within the first fragment; and a controller for controlling the decoder module, a sensory alert device, and a display device all coupled to the controller. - View Dependent Claims (10, 11, 12, 13)
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14. A time diversity communication system, comprising:
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a messaging terminal where messages are received from a caller; a queue at the messaging terminal for queuing incoming messages; an encoder for encoding a first fragment of a message and remaining fragments of a message; a transmitter for repeatedly transmitting the first fragment in a plurality of time slots to at least one of a plurality of selective call receivers operating in a first mode, the number of time slots equaling a desired number of repeat transmissions and wherein the first fragment contains instructions for decoding remaining fragments in a second mode by the at least one of a plurality of selective call receivers, and the transmitter for repeatedly transmitting the remaining fragments of the message in subsequent time slots; and at least one of a plurality of selective call receivers that decodes the first fragment and remaining fragments of the message in accordance with instructions in the first fragment after the selective call receiver decodes the first fragment repeatedly in the desired number of repeat transmissions. - View Dependent Claims (15, 16, 17, 18)
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19. A method of parsing a message into fragments in a messaging system, comprising the steps of:
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defining a number of bits per character in a message within a fragment; filling the fragment with complete characters if the number of bits per character is a sub-multiple of a predefined size of a message word within the fragment; filling a remaining portion of the fragment with default bits when the fragment does not end with a complete character when the number of bits per character is not a sub-multiple of the predefined size of the message word; and starting a subsequent fragment with a next character starting in a known position. - View Dependent Claims (20, 21, 22, 23)
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24. A method of parsing a message into fragments in a messaging system, comprising the steps of:
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defining a number of bits per character in a message within a fragment; filling the fragment with complete characters and partial characters; determining the number of partial character bits at the end of a fragment to find a first character boundary in a subsequent fragment; and creating a control field to indicate the character boundary in the subsequent fragment. - View Dependent Claims (25)
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Specification