Managing traffic in communications system having dissimilar CDMA channels
First Claim
1. In a code division multiple access (CDMA) communications system including plural terminals that communicate with a node via at least a random access channel and a reservation-oriented channel, a method of managing traffic on the random access and reservation-oriented channels, the method comprising:
- employing a processor executing computer executable instructions embodied on a computer readable media to perform the following acts;
a) comparing to at least one criterion, characteristics of traffic in which data is communicated from a given terminal; and
b1) when the traffic characteristics satisfy the at least one criterion;
1) sending a bandwidth reservation request;
2) processing and granting the bandwidth reservation request;
3) communicating the granting of the bandwidth reservation request to the given terminal; and
4) causing the given terminal to transmit data on the reservation-oriented channel, the reservation-oriented channel transmits data based on orthogonal code division multiple access (OCDMA); and
b2) when the traffic characteristics fail the at least one criterion, causing the given terminal to transmit data on the random access channel, the random access channel transmits data based on asynchronous code division multiple access (ACDMA).
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Accused Products
Abstract
In a code division multiple access (CDMA) communications system including one or more terminals (such as customer premise equipments, CPEs) that communicate with a node (such as an Internet gateway) via at least a random access channel and a reservation-oriented channel, various schemes of managing communications traffic among the channels are provided. Decisions as to the channel on which a given terminal may transmit may be based on: traffic statistics (such as packet size or average data rate over a time period), traffic content (such as packet type), the terminal'"'"'s output buffer loading (queue state, or “Q-state”), a history of the terminal'"'"'s output buffer loading (one or more “Q-states”), and so forth. In one application, decisions in managing traffic in a live user'"'"'s web browsing sessions may involve intelligent ascertainment of whether a given terminal is busy based on traffic analysis or output buffer loading.
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Citations
35 Claims
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1. In a code division multiple access (CDMA) communications system including plural terminals that communicate with a node via at least a random access channel and a reservation-oriented channel, a method of managing traffic on the random access and reservation-oriented channels, the method comprising:
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employing a processor executing computer executable instructions embodied on a computer readable media to perform the following acts; a) comparing to at least one criterion, characteristics of traffic in which data is communicated from a given terminal; and b1) when the traffic characteristics satisfy the at least one criterion; 1) sending a bandwidth reservation request; 2) processing and granting the bandwidth reservation request; 3) communicating the granting of the bandwidth reservation request to the given terminal; and 4) causing the given terminal to transmit data on the reservation-oriented channel, the reservation-oriented channel transmits data based on orthogonal code division multiple access (OCDMA); and b2) when the traffic characteristics fail the at least one criterion, causing the given terminal to transmit data on the random access channel, the random access channel transmits data based on asynchronous code division multiple access (ACDMA). - View Dependent Claims (2, 3, 4, 5, 6, 7, 28, 32)
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8. In a code division multiple access (CDMA) communications system including plural terminals that communicate with a node via at least a random access channel and a reservation-oriented channel, a method of managing traffic on the random access and reservation-oriented channels, the method comprising:
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employing a processor executing computer executable instructions embodied on a computer readable media to perform the following acts; a) Comparing to at least one criterion, characteristics of traffic in which data is communicated from a given terminal, so as to arrive at an examination result; b) Determining, based on the examination result, whether the given terminal is in a busy condition; and c1) when the given terminal is determined to be in a busy condition; 1) Assigning to the given terminal, a code designating a reservation-oriented sub-channel; and 2) Causing the given terminal to transmit data on the reservation-oriented sub-channel, the reservation-oriented channel transmits data based on orthogonal code division multiple access (OCDMA); and c2) when the given terminal is determined not to be in a busy condition, causing the given terminal to transmit data on the random access channel, the random access channel transmits data based on asynchronous code division multiple access (ACDMA). - View Dependent Claims (9, 10, 11, 12, 13, 14, 29, 33)
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15. In a code division multiple access (CDMA) communications system including plural terminals that communicate with a node via at least a random access channel and a reservation-oriented channel, a method of managing traffic on the random access and reservation-oriented channels, the method comprising:
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employing a processor executing computer executable instructions embodied on a computer readable media to perform the following acts; a) examining a degree of loading of an output buffer of a given terminal to arrive at a Q-state; b) comparing a threshold to the Q-state of the given terminal; c1) when the Q-state is greater than the threshold; (1) assigning to the given terminal, a code designating a reservation-oriented sub-channel; (2) causing the given terminal to transmit data on the reservation-oriented sub-channel; (3) analyzing a history of at least one Q-state of the given terminal to arrive at a Q-state history analysis; (4) based at least in part on the Q-state history analysis, selecting and executing a step from a group including; i) assigning to the given terminal, a first code designating a faster reservation-oriented sub-channel operating at a higher data rate than a present data rate ii) assigning to the given terminal, a second code designating a same-speed reservation-oriented sub-channel operating at a same data rate as the present data rate; iii) assigning to the given terminal, a third code designating a slower reservation-oriented sub-channel operating at a lower data rate than the present data rate;
oriv) revoking from the given terminal, any code designating any reservation-oriented sub-channel; and c2) when the Q-state is less than the threshold, causing the given terminal to transmit data on the random access channel. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 30, 34)
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24. In a code division multiple access (CDMA) communications system including plural terminals that communicate with a node via at least a random access channel and a reservation-oriented channel, a method of managing traffic on the random access and reservation-oriented channels, the method comprising:
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employing a processor executing computer executable instructions embodied on a computer readable media to perform the following acts; a) examining a degree of loading of an output buffer of a given terminal to arrive at a Q-state; b) determining, based at least in part on the Q-state, whether the given terminal is in a busy condition; and c1) when the given terminal is determined to be in the busy condition; 1) assigning to the given terminal, a code designating a reservation-oriented sub-channel; and 2) causing the given terminal to transmit data on the reservation-oriented sub-channel, the reservation-oriented channel transmits data based on orthogonal code division multiple access (OCDMA); and c2) when the given terminal is determined not to be in the busy condition, causing the given terminal to transmit data on the random access channel, the random access channel transmits data based on asynchronous code division multiple access (ACDMA). - View Dependent Claims (25, 26, 27, 31, 35)
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Specification