Scheduling of user terminals in communication network
First Claim
1. A method comprising:
- determining a duration of a discontinuous reception cycle for a user terminal, wherein the beginning of the cycle triggers a first active period during which the user terminal is in an active mode;
determining an interval between periodic channel quality indicator reports for the user terminal;
aligning the discontinuous reception cycle with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is transmitted within the first active period of the discontinuous reception cycle;
receiving the periodic channel quality indicator during the first active period of the discontinuous reception cycle, obtaining an up-to-date channel quality indicator for the discontinuous reception cycle; and
scheduling the user terminals for downlink transmission by taking the received periodic channel quality indicator into account.
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Accused Products
Abstract
There is provided a method for scheduling user terminals for downlink transmission in a communication network, the method including determining a duration of a discontinuous reception cycle for a user terminal, wherein the beginning of the cycle triggers a first active period during which the user terminal is in an active mode; and determining an interval between periodic channel quality indicator reports for the user terminal. The method further includes aligning the discontinuous reception cycle with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is transmitted within the first active period of the discontinuous reception cycle, receiving the periodic channel quality indicator during the first active period of each discontinuous reception cycle, thus obtaining an up-to-date channel quality indicator for the discontinuous reception cycle, and scheduling the user terminals for downlink transmission by taking the received periodic channel quality indicator into account.
15 Citations
28 Claims
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1. A method comprising:
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determining a duration of a discontinuous reception cycle for a user terminal, wherein the beginning of the cycle triggers a first active period during which the user terminal is in an active mode; determining an interval between periodic channel quality indicator reports for the user terminal; aligning the discontinuous reception cycle with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is transmitted within the first active period of the discontinuous reception cycle; receiving the periodic channel quality indicator during the first active period of the discontinuous reception cycle, obtaining an up-to-date channel quality indicator for the discontinuous reception cycle; and scheduling the user terminals for downlink transmission by taking the received periodic channel quality indicator into account. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to; determine a duration of a discontinuous reception cycle for a user terminal, wherein the beginning of the cycle triggers a first active period during which the user terminal is in an active mode; determine an interval between periodic channel quality indicator reports for the user terminal; align the discontinuous reception cycle with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is transmitted within the first active period of the discontinuous reception cycle; receive the periodic channel quality indicator during the first active period of the discontinuous reception cycle, obtaining an up-to-date channel quality indicator for the discontinuous reception cycle; and schedule the user terminals for downlink transmission by taking the received periodic channel quality indicator into account. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to; obtain information related to a duration of a discontinuous reception cycle, wherein the beginning of the cycle triggers a first active period during which the apparatus is in an active mode, and information related to an interval between periodic channel quality indicator reports, wherein the discontinuous reception cycle is aligned with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is to be transmitted within the first active period of the discontinuous reception cycle; and transmit the periodic channel quality indicator during the first active period of the discontinuous reception cycle, providing an up-to-date channel quality indicator for scheduling during the discontinuous reception cycle. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A computer program product embodied on a non-transitory medium readable by a computer and comprising program instructions which, when loaded into an apparatus, are configured to control or carry out:
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determining a duration of a discontinuous reception cycle for a user terminal, wherein the beginning of the cycle triggers a first active period during which the user terminal is in an active mode; determining an interval between periodic channel quality indicator reports for the user terminal; aligning the discontinuous reception cycle with the interval between the periodic channel quality indicator reports such that the periodic channel quality indicator is transmitted within the first active period of the discontinuous reception cycle; receiving the periodic channel quality indicator during the first active period of the discontinuous reception cycle, obtaining an up-to-date channel quality indicator for the discontinuous reception cycle; and scheduling the user terminals for downlink transmission by taking the received periodic channel quality indicator into account.
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Specification