Apparatus and method for determining CQI report cycle in an HSDPA communication system
First Claim
1. An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B and a plurality of the UEs existing in a cell region occupied by the Node B, the apparatus comprising:
- a receiver for receiving from each of the UEs acknowledgement (ACK) information or negative acknowledgement (NACK) information indicating whether received data is defective; and
a recommended CQI report cycle determiner for calculating an ACK information occurrence rate by counting a number of the ACK information or the NACK information detected for each of the UEs for a predetermined period, comparing the ACK information occurrence rate with a predetermined ACK information occurrence rate, and determining recommended CQI report cycles for the UEs according to the comparison result.
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Accused Products
Abstract
An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC. The Node B determines recommended CQI report cycles based on the number of UEs and the CQI information, and transmits the determined recommended CQI report cycles to the SRNC via the CRNC. The SRNC determines CQI report cycles for the UEs referring to the recommended CQI report cycles, and transmits the determined CQI report cycles to the UEs and the Node B.
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Citations
45 Claims
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1. An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B and a plurality of the UEs existing in a cell region occupied by the Node B, the apparatus comprising:
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a receiver for receiving from each of the UEs acknowledgement (ACK) information or negative acknowledgement (NACK) information indicating whether received data is defective; and
a recommended CQI report cycle determiner for calculating an ACK information occurrence rate by counting a number of the ACK information or the NACK information detected for each of the UEs for a predetermined period, comparing the ACK information occurrence rate with a predetermined ACK information occurrence rate, and determining recommended CQI report cycles for the UEs according to the comparison result. - View Dependent Claims (2, 3, 4)
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5. An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs) upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B and a plurality of the UEs existing in a cell region occupied by the Node B, the apparatus comprising:
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a receiver for receiving a particular channel signal and detecting a current channel condition variation rate by using the received particular channel signal; and
a recommended CQI report cycle determiner for comparing the current channel condition variation rate with a predetermined channel condition variation rate, and determining a recommended CQI report cycle according to the comparison result. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs) upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B and a plurality of the UEs existing in a cell region occupied by the Node B, the method comprising the steps of:
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receiving from each of the UEs acknowledgement (ACK) information or negative acknowledgement (NACK) information indicating whether received data is defective; and
calculating an ACK information occurrence rate by counting the number of the ACK information and NACK information detected for each of the UEs for a predetermined period, comparing the ACK information occurrence rate with a predetermined ACK information occurrence rate, and determining recommended CQI report cycles for the UEs according to the comparison result. - View Dependent Claims (12, 13, 14)
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15. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B and a plurality of the UEs existing in a cell region occupied by the Node B, the method comprising the steps of:
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receiving a particular channel signal and detecting a current channel condition variation rate by using the received particular channel signal; and
comparing the current channel condition variation rate with a predetermined channel condition variation rate, and then determining a recommended CQI report cycle according to the comparison result. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs) upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) determining, by the SRNC, recommended CQI report cycles based on whether the UEs are in a handover state, and transmitting the determined recommended CQI report cycles to the CRNC;
(b) determining, by the CRNC, CQI report cycles of the UEs by considering the recommended CQI report cycles, a state of Node Bs currently communicating with the UEs, and a state of their neighbor Node Bs, and transmitting the determined CQI report cycles to the SRNC and the Node Bs; and
(c) transmitting, by the SRNC, the determined CQI report cycles to the UEs. - View Dependent Claims (22, 23)
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24. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) if it is determined that current CQI report cycles set for the UEs should be changed, determining, by the SRNC, desired CQI report cycles as recommended CQI report cycles and transmitting the determined recommended CQI report cycles to the CRNC;
(b) determining, by the CRNC, CQI report cycles of the UEs by considering the recommended CQI report cycles, a state of Node Bs currently communicating with the UEs, and a state of their neighbor Node Bs, and then transmitting the determined CQI report cycles to the Node Bs; and
(c) determining, by the SRNC, an activation time indicating a time when the determined CQI report cycles are to be applied, transmitting the activation time and the determined CQI report cycles to the Node Bs via the CRNC, and transmitting the activation time and the determined CQI report cycles to the UEs. - View Dependent Claims (25, 26)
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27. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) if it is determined that current CQI report cycles set for the UEs should be changed, determining, by the CRNC, desired CQI report cycles as new CQI report cycles considering a state of Node Bs currently communicating with the UEs and a state of their neighbor Node Bs, and transmitting the determined new CQI report cycles to the Node Bs and the SRNC; and
(b) upon receiving the new CQI report cycles, determining by the SRNC an activation time indicating a time when the determined new CQI report cycles are to be applied, transmitting the activation time to the Node Bs, and transmitting the activation time and the determined new CQI report cycles to the UEs. - View Dependent Claims (28, 29)
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30. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs) upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) determining, by the Node B, recommended CQI report cycles based on the number of UEs and the CQI information, and transmitting the recommended CQI report cycles to the CRNC;
(b) determining, by the CRNC, new CQI report cycles considering the recommended CQI report cycles and states of the Node B and its neighbor Node Bs, and transmitting the determined new CQI report cycles to the Node B and the SRNC; and
(c) upon receiving the new CQI report cycles, determining, by the SRNC, an activation time indicating a time when the determined new CQI report cycles are to be actually applied, transmitting the determined activation time to the Node B, and transmitting the activation time and the new CQI report cycles to the UEs. - View Dependent Claims (31, 32)
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33. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) if it is determined that current CQI report cycles set for the UEs should be changed, determining, by the Node B, first recommended CQI report cycles, and transmitting the first recommended CQI report cycles to the CRNC;
(b) determining, by the CRNC, second recommended CQI report cycles considering the first recommended CQI report cycles and states of the Node B and its neighbor Node Bs, and transmitting the second recommended CQI report cycles to the SRNC; and
(c) determining, by the SRNC, CQI report cycles for the second recommended CQI report cycles and an activation time indicating a time when the determined CQI report cycles are to be actually applied, and transmitting the determined CQI report cycles and the activation time to the Node B and the UEs. - View Dependent Claims (34, 35)
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36. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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(a) determining, by the Node B, recommended CQI report cycles based on the number of UEs and the CQI information;
(b) transmitting, by the Node B, the recommended CQI report cycles to the SRNC via the CRNC; and
(c) transmitting, by the SRNC, CQI report cycles determined for the recommended CQI report cycles to the UEs and the Node B. - View Dependent Claims (37, 38, 39)
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40. An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the apparatus comprising:
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the Node B for determining recommended CQI report cycles based on the number of UEs and the CQI information, and transmitting the determined recommended CQI report cycles to the SRNC via the CRNC; and
the SRNC for determining CQI report cycles for the UEs referring to the recommended CQI report cycles, and transmitting the determined CQI report cycles to the UEs and the Node B. - View Dependent Claims (41, 42, 43)
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44. A method for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the method comprising the steps of:
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determining, by the Node B, recommended CQI report cycles desired to be applied to the UEs;
transmitting, by the Node B, the recommended CQI report cycles to the SRNC via the CRNC; and
determining, by the SRNC, CQI report cycles for the UEs referring to the recommended CQI report cycles and transmitting the determined CQI report cycles to the UEs and the Node B.
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45. An apparatus for determining channel quality indicator (CQI) report cycles for user equipments (UEs), upon receiving CQI information from the UEs receiving a high speed downlink packet access (HSDPA) service from a Node B, in a mobile communication system including the Node B, a plurality of the UEs existing in a cell region occupied by the Node B, a controlling radio network controller (CRNC) connected to the Node B, and a serving radio network controller (SRNC) connected to the CRNC, the apparatus comprising:
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the Node B for determining recommended CQI report cycles desired to be applied to the UEs, and transmitting the recommended CQI report cycles to the SRNC via the CRNC; and
the SRNC for determining CQI report cycles for the UEs referring to the recommended CQI report cycles, and transmitting the determined CQI report cycles to the UEs and the Node B.
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Specification