Radio resource allocating method and apparatus in adaptive antenna system
AssigneeSamsung Electronics Co., Ltd.
InventorNam-Gi Kim
Life of this patent
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Abstract
A radio resource allocating method in an adaptive antenna system is provided. The radio resource allocating method includes selecting one user when there are one or more users allocable to a current spatial frame; calculating a sum of Modulation order Product code Rate (MPR) values with respect to users allocated a same radio resource including the selected user when a total transmit power of a Base Station (BS) is divided by a current spatial frame index; and allocating the selected user to the current spatial frame by taking into account the calculated sum and a sum of MPR values with respect to users allocated to a previous spatial frame. Accordingly, a system throughput or a scheduler performance can be maximized.
Claims16
A method for simultaneously allocating a radio resource in a frequency-time domain to a plurality of users in an adaptive antenna system, the method comprising:
- acquiring channel qualities of a plurality of users for the radio resource;
- when a total transmit power of a Base Station (BS) is divided by a number of users allocated to the radio resource, allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource and a sum of Modulation order Product code Rate (MPR) values of the users allocated to the radio resource and the user;
- checking whether a channel quality of the user is greater than a threshold;
- when the channel quality of the user is greater than the threshold, calculating the sum of the MPR values of the users allocated to the radio resource and the user;
- and
- transmitting data to the users by using the radio resource and power divided by the users allocated to the radio resource.
A method for simultaneously allocating a radio resource in a frequency-time domain to a plurality of users in an adaptive antenna system, the method comprising:
- acquiring channel qualities of a plurality of users for the radio resource;
- when different transmit powers are given for the plurality of users, allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource, a sum of Modulation order Product code Rate (MPR) values of the users pre-allocated to the radio resource and the user, and a transmit power set corresponding to a largest sum of MPR values;
- checking whether a channel quality of the user is greater than a threshold;
- when the channel quality of the user is greater than the threshold, calculating the sum of the MPR values of the users allocated to the radio resource and the user;
- and
- transmitting data to the users by using the radio resource and a different transmit power.
A method for simultaneously allocating a radio resource in a frequency-time domain to a plurality of users in an adaptive antenna system, the method comprising:
- acquiring channel qualities of a plurality of users for the radio resource;
- when a total transmit power of a Base Station (BS) is divided by a number of users allocated to the radio resource, allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource and a sum of scheduling weight values of the users allocated to the radio resource and the user;
- checking whether a channel quality of the user is greater than a threshold;
- when the channel quality of the user is greater than the threshold, calculating the sum of the scheduling weight values of the users allocated to the radio resource and the user;
- and
- transmitting data to the users by using the radio resource and power divided by the users allocated to the radio resource.
A method for simultaneously allocating a radio resource in a frequency-time domain to a plurality of users in an adaptive antenna system, the method comprising:
- acquiring channel qualities of a plurality of users for the radio resource;
- when different transmit powers are given for the plurality of users, allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource, a sum of scheduling weight values of users allocated to the radio resource and the user, and a transmit power set corresponding to a largest sum of scheduling weight values;
- checking whether a channel quality of the user is greater than a threshold;
- when the channel quality of the user is greater than the threshold, calculating the sum of scheduling weight values of the users allocated to the radio resource and the user;
- and
- transmitting data to the users by using the radio resource and a different transmit power.
An apparatus for simultaneously allocating a radio resource in a frequency-time domain to a plurality of user terminals in an adaptive antenna system, the apparatus comprising:
- means for acquiring channel qualities of a plurality of users for the radio resource;
- means for allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource and a sum of Modulation order Product code Rate (MPR) values of the users allocated to the radio resource and the user, when a total transmit power of a Base Station (BS) is divided by a number of users allocated to the radio resource;
- means for checking whether a channel quality of the user is greater than a threshold;
- means for calculating the sum of the MPR values of the users allocated to the radio resource and the user, when the channel quality of the user is greater than the threshold;
- and
- means for transmitting data to the users by using the radio resource and power divided by the users allocated to the radio resource.
An apparatus for simultaneously allocating a radio resource in a frequency-time domain to a plurality of user terminals in an adaptive antenna system, the apparatus comprising:
- means for acquiring channel qualities of a plurality of users for the radio resource;
- means for allocating a user with at least one user to the radio resource based on the channel qualities of the plurality of users for the radio resource, a sum of Modulation order Product code Rate (MPR) values of the users allocated to the radio resource and the user, and a transmit power set corresponding to a largest sum of MPR values, when different transmit powers are given for the plurality of users;
- means for checking whether a channel quality of the user is greater than a threshold;
- means for calculating the sum of the MPR values of the users allocated to the radio resource and the user, when the channel quality of the user is greater than the threshold;
- and
- means for transmitting data to the users by using the radio resource and a different transmit power.
An apparatus for simultaneously allocating a radio resource in a frequency-time domain to a plurality of user terminals in an adaptive antenna system, the apparatus comprising:
- means for acquiring channel qualities of a plurality of users for the radio resource;
- means for allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource and a sum of scheduling weight values of the users allocated to the radio resource and the user, when a total transmit power of a Base Station (BS) is divided by a number of users allocated to the radio resource;
- means for checking whether a channel quality of the user is greater than a threshold;
- means for calculating the sum of the scheduling weight values of the users allocated to the radio resource and the user, when the channel quality of the user is greater than the threshold;
- and
- means for transmitting data to the users by using the radio resource and power divided by the users allocated to the radio resource.
An apparatus for simultaneously allocating a radio resource in a frequency-time domain to a plurality of user terminals in an adaptive antenna system, the apparatus comprising:
- means for acquiring channel qualities of a plurality of users for the radio resource;
- means for allocating a user with at least one different user to the radio resource based on the channel qualities of the plurality of users for the radio resource, a sum of scheduling weight values of users allocated to the radio resource and the user, and a transmit power set corresponding to a largest sum of scheduling weight values, when different transmit powers are given for the plurality of users;
- means for checking whether a channel quality of the user is greater than a threshold;
- means for calculating the sum of the scheduling weight values of the users allocated to the radio resource and the user, when the channel quality of the user is greater than the threshold;
- and
- means for transmitting data to the users by using the radio resource and different transmit power.
Dependencies are inferred from the claim text.