Transmittal of heartbeat signal at a lower level than heartbeat request
First Claim
1. In a wireless communications system, a method for determining a request to change communications state, the method comprising:
- receiving at least one signal having a first indication of a first communications state and having a first energy level;
receiving said at least one signal having a second indication for a request to change to a second communications state and having a second energy level; and
detecting the indications according to alternative criteria.
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Accused Products
Abstract
A communication system, such as a wireless CDMA system, detects markers with fewer errors by having field units transmit the markers at different power levels (e.g., 9 dB for one marker and 11 dB for another marker). The difference in power levels of the markers allows the base station to identify the request markers using alternative criteria with a low probability of error, where the alternative criteria may include comparing the markers to respective energy level thresholds, monitoring occupancy of time slots, occupancy of mutually exclusive code channels, or combinations thereof. For example, in one particular embodiment, a request marker, which is generally a high priority marker, is transmitted with higher power, which improves the probability of detection and reduces the probability of false detection of the request marker.
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Citations
62 Claims
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1. In a wireless communications system, a method for determining a request to change communications state, the method comprising:
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receiving at least one signal having a first indication of a first communications state and having a first energy level; receiving said at least one signal having a second indication for a request to change to a second communications state and having a second energy level; and detecting the indications according to alternative criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. In a wireless communications system, an apparatus for determining a request for changing communications state, the apparatus comprising:
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a receiver to receive at least one signal having (i) a first indication of a first communications state at a first energy level and (ii) a second indication for a request to change to a second communications state at a second energy level; and a detector coupled to the receiver to detect the indications according to alternative criteria. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. In a wireless communications system, an apparatus for determining a request to change communications state, the apparatus comprising:
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means for receiving at least one signal having (i) a first indication of a first communications state at a first energy level and (ii) a second indication for a request to change to a second communications state at a second energy level; and means for detecting the indications according to alternative criteria.
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37. In a wireless communications system, a method for making a request to change communications state, the method comprising:
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selecting indications to be transmitted in a signal, the indications having respective energy levels associated with data communications states and detectable according to alternative criteria; and transmitting the signal including at least one indication. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. In a wireless communications system, an apparatus for making a request to change communications state, the apparatus comprising:
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a selector to select indications to be transmitted in a signal, the indications having respective energy levels associated with communications states and detectable according to alternative criteria; and a transmitter coupled to the selector to transmit the signal including at least one indication. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. In a wireless communications system, an apparatus for making a request to change communications state, the apparatus comprising:
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means for selecting indications to be transmitted in a signal, the indications having respective energy levels associated with communications states and detectable according to alternative criteria; and transmitting means to transmit the signal including at least one indication.
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Specification