Method and apparatus for scheduling in cellular system using cable relay station
First Claim
1. A method for scheduling in a cellular system using a relay station (RS), the method comprising the steps of:
- classifying each of a plurality mobile stations (MSs) in a corresponding cell based on a base station (BS) into one of a Cooperative Transmission (CT) MSs for cooperative transmission and a Single Transmission (ST) MSs for single transmission according to each channel by signal-to-interference-plus-noise ratio (SINR) values of the MSs;
mapping the CT MSs and ST MSs classified according to each channel to a channel capacity of each channel, which has been allocated to each RS, selecting a channel with a largest channel capacity, comparing the channel capacity of the selected channel with preset CT criteria, and transmitting, by a corresponding MS, a single request message or multiple request messages to the RS through a corresponding channel according to a result of the comparison;
selecting an MS having a metric value of a highest priority according to a corresponding scheduling algorithm from among multiple MSs which have transmitted the request message(s), and transmitting a grant message to the selected MS; and
accepting a channel of a corresponding scheduler which has transmitted the grant message.
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Abstract
A method for scheduling in a cellular system using a relay station (RS) through an inter-antenna cooperative transmission technology based on pre-cooperation information according to each channel in a cellular system using a cable RS in order to increase the throughput of the entire system. The steps include classifying all mobile stations (MSs) in a corresponding cell based into Cooperative Transmission (CT) MSs for cooperative transmission and Single Transmission (ST) MSs for to each channel; mapping channel-by-channel channel capacities of the CT MSs and ST MSs classified according to each channel, selecting a channel with a highest priority, and receiving a request message from a corresponding MS according to whether the capacity of the selected channel satisfies preset CT criteria and selecting an MS having a metric value of a highest priority according to a corresponding scheduling algorithm, from among multiple requesting MSs.
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Citations
10 Claims
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1. A method for scheduling in a cellular system using a relay station (RS), the method comprising the steps of:
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classifying each of a plurality mobile stations (MSs) in a corresponding cell based on a base station (BS) into one of a Cooperative Transmission (CT) MSs for cooperative transmission and a Single Transmission (ST) MSs for single transmission according to each channel by signal-to-interference-plus-noise ratio (SINR) values of the MSs; mapping the CT MSs and ST MSs classified according to each channel to a channel capacity of each channel, which has been allocated to each RS, selecting a channel with a largest channel capacity, comparing the channel capacity of the selected channel with preset CT criteria, and transmitting, by a corresponding MS, a single request message or multiple request messages to the RS through a corresponding channel according to a result of the comparison; selecting an MS having a metric value of a highest priority according to a corresponding scheduling algorithm from among multiple MSs which have transmitted the request message(s), and transmitting a grant message to the selected MS; and accepting a channel of a corresponding scheduler which has transmitted the grant message. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for scheduling in a cellular system using a cable relay station, the apparatus comprising:
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an input unit for receiving signal-to-interference-plus-noise ratio (SINR) values from a plurality of mobile stations (MSs) according to each channel; a determination unit for calculating transmission capacities of the plurality of MSs by using the SINR values of the MSs according to each channel, and applying the transmission capacities to predetermined equations; and for determining whether each of the plurality of MSs are classified as a Single Transmission MSs for single transmission or a Cooperative Transmission MSs for cooperative transmission; a parallel packet scheduler for mapping each channel capacity according to a corresponding channel of each RS in the CT and ST modes, by information with the ST MSs and CT MSs classified according to each channel by the determination unit, for selecting a channel having a largest channel capacity, determining if the selected channel satisfies CT criteria by checking the selected channel in a CT map, for receiving either a single request message or multiple request message from MSs according to each channel based on a result of the determination, for selecting an MS having the greatest scheduling metric value from among the MSs which have transmitted the request messages, and for controlling a grant message to be transmitted to the selected MS; and a channel allocation unit for receiving grant message reception information from the parallel packet scheduler, and for allocating a channel of a corresponding scheduler according to the grant message reception information, so that the channel of the corresponding scheduler can be accepted. - View Dependent Claims (9, 10)
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Specification