Encoding Information in Beacon Signals
First Claim
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1. A method of transmitting a set of broadcast information bits using a predetermined set of bandwidth degrees of freedom, comprising:
- generating from a plurality of broadcast information bits a first subset of broadcast information bits and a second subset of broadcast information bits;
partitioning a predetermined set of bandwidth of degrees of freedom into at least two subsets, each subset including a plurality of bandwidth degrees of freedom;
choosing a subset from the at least two subsets of bandwidth degrees of freedom as a function of the first subset of broadcast information bits;
selecting at least one of the bandwidth degrees of freedom in the chosen subset as a function of the second subset of broadcast information bits; and
transmitting a beacon signal in the at least one selected bandwidth degree of freedom.
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Abstract
Systems and methodologies are described that facilitate transmitting at least two different types of information in a single signal, whereby the different types of information can be encoded and decoded independently. Thus, changes to one type of information does not affect a second type of information.
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Citations
42 Claims
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1. A method of transmitting a set of broadcast information bits using a predetermined set of bandwidth degrees of freedom, comprising:
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generating from a plurality of broadcast information bits a first subset of broadcast information bits and a second subset of broadcast information bits;
partitioning a predetermined set of bandwidth of degrees of freedom into at least two subsets, each subset including a plurality of bandwidth degrees of freedom;
choosing a subset from the at least two subsets of bandwidth degrees of freedom as a function of the first subset of broadcast information bits;
selecting at least one of the bandwidth degrees of freedom in the chosen subset as a function of the second subset of broadcast information bits; and
transmitting a beacon signal in the at least one selected bandwidth degree of freedom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless communications apparatus that transmits a set of broadcast information bits, comprising:
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a memory that retains instructions related to generating a first subset of broadcast information bits and a second subset of broadcast information bits, partitioning a set of bandwidth degrees of freedom into two or more subsets, deciding which subset to use as a function of the first subset of broadcast information bits, choosing one or more bandwidth degrees of freedom in the subset as a function of the second subset of broadcast information and sending the chosen one or more bandwidth degrees of freedom in a beacon signal; and
a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (11, 12, 13, 14)
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15. A wireless communications apparatus that enables independent coding of at least two subsets of information in a beacon signal, comprising:
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means for creating a first subset of broadcast information bits and a second subset of broadcast information bits from a plurality of broadcast information bits;
means for dividing a set of bandwidth degrees of freedom into at least two subsets;
means for choosing one subset from the at least two subsets as a function of the first subset of broadcast information bits;
means for independently selecting at least one of the bandwidth degrees of freedom in the chosen subset as a function of the second subset of broadcast information; and
means for selectively transmitting information in the at least one bandwidth degree of freedom. - View Dependent Claims (16, 17)
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18. A machine-readable medium having stored thereon machine-executable instructions for:
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producing a first and a second subset of broadcast information bits;
dividing a set of bandwidth degrees of freedom into two or more subsets from a plurality of broadcast information bits;
selecting a subset from the two or more subsets as a function of the first subset of broadcast information bits;
selecting at least one the set of bandwidth degrees of freedom in the selected subset as a function of the second subset of broadcast information bits; and
transmitting a beacon signal in the at least one selected bandwidth degree of freedom. - View Dependent Claims (19, 20)
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21. In a wireless communication system, an apparatus comprising:
a processor configured to;
create a first and a second subset of broadcast information bits from a plurality of broadcast information bits;
divide a set of bandwidth degrees of freedom into at least two subsets in a predetermined manner and independently of the set of broadcast information bits;
choose a subset from the at least two subsets of bandwidth degrees of freedom as a function of the first subset of broadcast information bits;
select at least one of the bandwidth degrees of freedom in the chosen subset as a function of the second subset of broadcast information bits; and
transmit a beacon signal in the at least one selected bandwidth degree of freedom at a power in each selected bandwidth degree of freedom that is X dB higher than an average transmission power used in each non-selected degree of freedom in the set of bandwidth degrees of freedom, X being at least 10 db.
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22. A method for receiving a set of broadcast information bits, comprising:
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receiving a beacon symbol in at least one bandwidth degree of freedom;
determining which bandwidth degree of freedom was selected from a plurality of bandwidth degrees of freedom included in a subset; and
ascertaining which subset was selected from at least two subsets of bandwidth degrees of freedom. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A wireless communications apparatus that selectively decodes information received in a beacon signal, comprising:
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a memory that retains instructions related to receiving a chosen one or more bandwidth degrees of freedom in a beacon signal, determining which bandwidth degrees of freedom was received from a subset, deciding which subset was selected from two or more subsets and reconstructing a set of bandwidth degrees of freedom from the two or more subsets; and
a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (33, 34, 35)
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36. A wireless communications apparatus that enables independent decoding of at least two subsets of information received in a beacon signal, comprising:
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means for selectively receiving information in at least one bandwidth degree of freedom;
means for independently determining which one of a plurality of bandwidth degrees of freedom in a chosen subset was received;
means for deciding which subset from at least two subsets included the at least one of a plurality if bandwidth degrees of freedom;
means for combining the at least two subsets into a set of bandwidth degrees of freedom; and
means for decoding a plurality of broadcast information bits from the first subset of broadcast information bits and the second subset of broadcast information bits. - View Dependent Claims (37, 38)
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39. A machine-readable medium having stored thereon machine-executable instructions for:
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receiving a beacon signal in at least one selected bandwidth degree of freedom;
determining which bandwidth degree of freedom in a subset that includes a plurality of bandwidth degrees of freedom was received; and
ascertaining which subset of broadcast information bits were chosen from at least two subsets for the beacon signal. - View Dependent Claims (40, 41)
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42. In a wireless communication system, an apparatus comprising:
a processor configured to;
receive a beacon signal in at least one selected bandwidth degree of freedom at a power in each selected bandwidth degree of freedom that is X dB higher than an average transmission power used in each non-selected degree of freedom in the set of bandwidth degrees of freedom, X being at least 10 dB;
determine at least one of the bandwidth degrees of freedom in a chosen subset that the beacon signal was received in; and
ascertain which subset of bandwidth degrees of freedom from at least two subsets a set of bandwidth degrees of freedom was divided.
Specification