Use of orthogonal or near orthogonal codes in reverse link
First Claim
1. A subscriber unit for communicating with a network device, wherein the network device is in communication, during a time slot, with a first plurality of subscriber units each associated with a sequence that is different from sequences associated with other subscriber units of the first plurality of subscriber units, and with a second plurality of subscriber units each associated with a sequence that is also associated with other subscriber units of the second plurality of subscriber units and an orthogonal sequence that is different from an orthogonal sequence of other subscriber units of the second plurality of subscriber units, the subscriber unit comprising:
- an antenna; and
transmitter circuitry operatively coupled to the antenna and configured to transmit a wireless signal in the time slot;
wherein the subscriber unit is one of the first plurality of subscriber units; and
wherein the wireless signal is generated using the sequence that is different from the sequences associated with other subscriber units of the first plurality of subscriber units, and not using the orthogonal sequence.
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Accused Products
Abstract
An apparatus and method for use with a shared access communication channel is disclosed. A wireless network device receives signals and recovers data from a first plurality of subscriber units and a second plurality of subscriber units in a time interval. Received signals from the first plurality of subscriber units are distinguishable by having unique pseudo noise (PN) sequence with respect to others of the first plurality of subscriber units. Received signals the second plurality of subscriber units are distinguishable by a unique orthogonal sequence with respect to others of the second plurality of subscriber units. Received signals are distinguished between the first and second plurality of subscriber units based on detection of an orthogonal sequence present only in the received signals from the second plurality of subscriber units.
99 Citations
20 Claims
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1. A subscriber unit for communicating with a network device, wherein the network device is in communication, during a time slot, with a first plurality of subscriber units each associated with a sequence that is different from sequences associated with other subscriber units of the first plurality of subscriber units, and with a second plurality of subscriber units each associated with a sequence that is also associated with other subscriber units of the second plurality of subscriber units and an orthogonal sequence that is different from an orthogonal sequence of other subscriber units of the second plurality of subscriber units, the subscriber unit comprising:
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an antenna; and transmitter circuitry operatively coupled to the antenna and configured to transmit a wireless signal in the time slot;
wherein the subscriber unit is one of the first plurality of subscriber units; andwherein the wireless signal is generated using the sequence that is different from the sequences associated with other subscriber units of the first plurality of subscriber units, and not using the orthogonal sequence. - View Dependent Claims (2, 3, 4, 5)
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6. A subscriber unit for communicating with a network device, wherein the network device is in communication, during a time slot, with a first plurality of subscriber units each associated with a sequence that is different from a sequence of other subscriber units of the first plurality of subscriber units, and with a second plurality of subscriber units each associated with a sequence that is also associated with other subscriber units of the second plurality of subscriber units and an orthogonal sequence that is different from an orthogonal sequence of others of the second plurality of subscriber units, the subscriber unit comprising:
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an antenna; and transmitter circuitry operatively coupled to the antenna and configured to transmit a wireless signal in the time slot;
wherein the subscriber unit is one of the second plurality of subscriber units; andwherein the wireless signal is generated using the orthogonal sequence and the sequence that also associated with the other subscriber units of the second plurality of subscriber units. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless network device comprising:
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at least one antenna; and receiver circuitry operatively coupled to the antenna and configured to receive signals from a first plurality of subscriber units in a time slot; and the receiver circuitry further configured to receive signals from a second plurality of subscriber units in the time slot; wherein the signal received from each of the first plurality of subscriber units comprises data combined with a sequence that is different from a sequence associated with other subscriber units of the first plurality of subscriber units and the data is not combined with an orthogonal sequence; and wherein the signal received from each of the second plurality of subscriber units comprises an orthogonal sequence that is different from an orthogonal sequence of other subscriber units of the second plurality of subscriber units, the received signal from each of the second plurality of subscriber units having a same sequence as the other subscriber units of the second plurality of subscriber units. - View Dependent Claims (12, 13, 14, 15)
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16. A method comprising:
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receiving signals, by a wireless network device, from a first plurality of subscriber units and a second plurality of subscriber units, in a time slot; wherein the signal received from each of the first plurality of subscriber units comprises data combined with a sequence that is different from a sequence of others of the first plurality of subscriber units and the data is not combined with an orthogonal sequence; and wherein the signal received from each of the second plurality of subscriber units comprises an orthogonal sequence different from an orthogonal sequence of others of the second plurality of subscriber units, the received signal from each of the second plurality of subscriber units having a same sequence as the others of the second plurality of subscriber units. - View Dependent Claims (17, 18, 19, 20)
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Specification