Power detection in a spread spectrum system
First Claim
1. A method of measuring a receive signal strength indicator in a communication system, the method comprising:
- receiving spread signals from a first transmitter and a second transmitter at a receiver;
despreading the spread signals with a first spreading code into a first frame;
determining a first receive signal strength indicator from the first frame;
despreading the spread signals with a second spreading code into a second frame;
determining a second receive signal strength indicator from the second frame;
selecting an access point based in part on the first receive signal strength indicator and the second receive signal strength indicator; and
transmitting an uplink signal to the access point at a first time based on a slot start time and a first random timing offset, wherein the uplink signal is transmitted while at least a portion of a second signal is transmitted from a second node such that both the uplink signal and the second signal are received, and wherein the second signal is transmitted at a second time based on the slot time and a second random timing offset.
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Accused Products
Abstract
This disclosure relates to method, device and system for selecting a device for communication in a communication system. A node receives a spread signal from a first transmitter and a second transmitter. The node despreads the spread signal with a first spreading code into a first frame and determines a first receive signal strength indicator (RSSI) from the first frame. The node despreads the spread signal with a second spreading code into a second frame and determines a second RSSI from the second frame. The node selects an access point based in part on the first RSSI and the second RSSI. The node transmits an uplink signal to the access point based on a slot start time and a random timing offset. The node transmits while a portion of a second signal is transmitted from a second node such that both the uplink signal and the second signal are received.
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Citations
18 Claims
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1. A method of measuring a receive signal strength indicator in a communication system, the method comprising:
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receiving spread signals from a first transmitter and a second transmitter at a receiver; despreading the spread signals with a first spreading code into a first frame; determining a first receive signal strength indicator from the first frame; despreading the spread signals with a second spreading code into a second frame; determining a second receive signal strength indicator from the second frame; selecting an access point based in part on the first receive signal strength indicator and the second receive signal strength indicator; and transmitting an uplink signal to the access point at a first time based on a slot start time and a first random timing offset, wherein the uplink signal is transmitted while at least a portion of a second signal is transmitted from a second node such that both the uplink signal and the second signal are received, and wherein the second signal is transmitted at a second time based on the slot time and a second random timing offset. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A node comprising:
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a processor; a receiver operatively coupled to the processor and configured to receive spread signals from a first transmitter and a second transmitter; despread the spread signals with a first spreading code into a first frame; determine a first receive signal strength indicator from the first frame; despread the spread signals with a second spreading code into a second frame; determine a second receive signal strength indicator from the second frame; and select an access point based in part on the first receive signal strength indicator and the second receive signal strength indicator; and a transmitter operatively coupled to the processor and configured to transmit an uplink signal to the access point at a first time based on a slot start time and a first random timing offset, wherein the uplink signal is transmitted while at least a portion of a second signal is transmitted from a second node such that both the uplink signal and the second signal are received, and wherein the second signal is transmitted at a second time based on the slot time and a second random timing offset. - View Dependent Claims (8, 9, 10, 11, 18)
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12. A system comprising:
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a first access point comprising a first transmitter; a second access point comprising a second transmitter; and a node comprising a processor, and a receiver operatively coupled to the processor and configured to receive spread signals from the first transmitter and the second transmitter, despread the spread signals with a first spreading code into a first frame, determine a first receive signal strength indicator from the first frame, despread the spread signals with a second spreading code into a second frame, and determine a second receive signal strength indicator from the second frame; the processor further configured to select a destination access point based in part on the first receive signal strength indicator and the second receive signal strength indicator; and a third transmitter operatively coupled to the processor and configured to transmit an uplink signal to the destination access point at a first time based on a slot start time and a first random timing offset, wherein the uplink signal is transmitted while at least a portion of a second signal is transmitted from a second node such that both the uplink signal and the second signal are received, and wherein the second signal is transmitted at a second time based on the slot time and a second random timing offset. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification