US 5,914,950 A · Method and apparatus for reverse link rate scheduling

Abstract

In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the reverse link and decreases the transmission delay in data communication. Each remote station is assigned a maximum unscheduled transmission rate for the duration of the communication with a cell. A maximum scheduled transmission rate can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. The maximum scheduled transmission rate is assigned in accordance with a set of system goals, a list of system constraints, and collected information on the status of the communication network. Data is partitioned in data frames and transmitted over the reverse link at or below the maximum scheduled transmission rate which have been assigned to the scheduled user.

Claims14

Dependent claims

A method for scheduling data transmissions on a reverse link in a communication network comprising at least one cell and at least one scheduled user, said method comprising the steps of:

determining a reverse link capacity available for each of said at least one cell;
assigning a priority to each of said at least one scheduled user, wherein each priority is based on at least one factor selected from the group consisting of data time-sensitivity, energy-per-bit-to-noise-plus-interference ratio, soft handoff determination, transmit energy-per-bit required by said at least one scheduled user, amount of data to be transmitted, re-transmitted data, and type of service;
assigning a transmission rate to each of said at least one scheduled user;
sending said assigned transmission rate to said at least one scheduled user;
and
wherein said assigned transmission rate is based on said reverse link capacity available for each of said at least one cell and on said priority of each of said at least one scheduled user.

3 more elements

A method for scheduling data transmissions on a reverse link in a communication network comprising at least one cell and at least one scheduled user, said method comprising the steps of:

determining a reverse link capacity available for each of said at least one cell;
assigning a transmission rate to each of said at least one scheduled user;
sending said assigned transmission rate to said at least one scheduled user;
wherein said assigned transmission rate is based on said reverse link capacity available for each of said at least one cell;
reassigning said assigned transmission rate to a temporary transmission rate, wherein said temporary transmission rate is based on said reverse link capacity available for each of said at least one cell;
assigning a priority to each of at least one affected scheduled user selected from said at least one scheduled user in the communication network, wherein each priority is based on at least one factor selected from the group consisting of data time-sensitivity, energy-per-bit-to-noise-plus-interference ratio, soft handoff determination, transmit energy-per-bit required by said at least one scheduled user, amount of data to be transmitted, re-transmitted data, and type of service;
and
wherein said temporary transmission rate is further based on said priority of said affected scheduled users.

5 more elements

Dependencies are inferred from the claim text.

Method and apparatus for reverse link rate scheduling

Life of this patent

Method and apparatus for reverse link rate scheduling

Life of this patent

Abstract

Claims14