Apparatus and method for transmitting/receiving reference signal in wireless communication system supporting beam forming scheme
A method for transmitting by a reference signal transmitting apparatus a reference signal in a wireless communication system supporting a beam forming scheme is provided. The method includes transmitting beam pattern measurement window indication information including information related to at least two beam pattern measurement windows which each of reference signal receiving apparatuses will use to the reference signal receiving apparatuses; and transmitting reference signals based on beam patterns which the reference signal transmitting apparatus supports during a preset number of time units.
1. A method for transmitting reference signals by a transmitting apparatus comprising a plurality of beams in a wireless communication system, the method comprising:
identifying, based on information related to a receiving apparatus, each of a first time interval to which a first subset is allocated and a second time interval to which a second subset is allocated, wherein the first subset comprises a number of beams selected to support a service coverage of the plurality of beams from the plurality of beams, and the second subset comprises a number of other beams selected to support the service coverage from the plurality of beams;
transmitting at least one reference signal on the first subset during first time interval and on the second subset during the second time interval;
receiving, from the receiving apparatus, channel quality information measured based on the at least one reference signal;
obtaining a speed of the receiving apparatus from the information;
when the speed is greater than a threshold, allocating the first time interval or the second time interval to the receiving apparatus, and transmitting, to the receiving apparatus, information indicating the allocated first time interval or the second time interval; and
when the speed is less than the threshold, allocating the first time interval and the second time interval to the receiving apparatus, and transmitting, to the receiving apparatus, information indicating the allocated first time interval and the second time interval.
2. The method of claim 1 , further comprising:
broadcasting information indicating the first time interval and the second time interval.
3. The method of claim 2 , wherein the information comprises a data type indicating one of a real-time service data type, a non-real-time service data type, a user data type, and a non-user data type.
4. A method for receiving reference signals by a receiving apparatus in a wireless communication system, the method comprising:
receiving, from a transmitting apparatus, information to measure channel quality information;
identifying, based on the received information, each of a first time interval to which a first subset is allocated and a second time interval to which a second subset is allocated, wherein the first subset comprises a number of beams selected to support a service coverage of a plurality of beams from the plurality of beams, and the second subset comprises a number of other beams selected to support the service coverage from the plurality of beams;
when the first time interval or the second time interval is identified, receiving, from the transmitting apparatus, at least one reference signal on the first subset during the identified first time interval or the second subset during the identified second time interval;
when the first time interval and the second time interval is identified, receiving, from the transmitting apparatus, the at least one reference signal on the first subset during the first time interval and the second subset during the second time interval;
measuring a channel quality based on the at least one reference signal; and
transmitting, to the transmitting apparatus, the channel quality information related to the channel quality,
wherein the identifying comprises:
obtaining a speed of the receiving apparatus;
when the speed is greater than a threshold, transmitting, to the transmitting apparatus, information indicating a time interval to receive the at least one reference signal is the first time interval or the second time interval; and
when the speed is less than the threshold, transmitting, to the transmitting apparatus, information indicating the time interval comprises the first time interval and the second time interval.
5. The method of claim 4 , wherein the information comprises a data type indicating one of a real-time service data type, a non-real-time service data type, a user data type, or a non-user data type.
6. A transmitting apparatus for transmitting reference signals in a wireless communication system, the transmitting apparatus comprising:
a controller configured to identify, based on information related to a receiving apparatus, each of a first time interval to which a first subset is allocated and a second time interval to which a second subset is allocated, wherein the first subset comprises a number of beams selected to support a service coverage of a plurality of beams from the plurality of beams, and the second subset comprises a number of other beams selected to support the service coverage from the plurality of beams; and
a transceiver configured to transmit at least one reference signal on the first subset-during the first time interval and on the second subset during the second time interval and receiving, from receiving apparatus, channel quality information measured based on the at least one reference signal,
wherein the controller is further configured to:
obtain a speed of the receiving apparatus from the information,
when the speed is greater than a threshold, allocate the first time interval or the second time interval to the receiving apparatus, and control the transceiver to transmit, to the receiving apparatus, information indicating the allocated first time interval or the second time interval, and
when the speed is less than the threshold, allocate the first time interval and the second time interval to the receiving apparatus, and control the transceiver to transmit, to the receiving apparatus, information indicating the allocated first time interval and the second time interval.
7. The transmitting apparatus of claim 6 , wherein the information comprises a data type indicating one of a real-time service data type, a non-real-time service data type, a user data type, or a non-user data type.
8. The transmitting apparatus of claim 6 , wherein the transceiver is configured to broadcast information indicating the first time interval and the second time interval.
9. A receiving apparatus for receiving reference signals in a wireless communication system, the receiving apparatus comprising:
a transceiver configured to receive, from a transmitting apparatus, information to measure channel quality information; and
a controller configured to identify, based on the received information, each of a first time interval to which a first subset is allocated and a second time interval to which a second subset is allocated, wherein the first subset comprises a number of beams selected to support a service coverage of a plurality of beams from the plurality of beams, and the second subset comprises a number of other beams selected to support the service coverage from the plurality of beams,
when the first time interval or the second time interval is identified, control the transceiver to receive, from the transmitting apparatus, at least one reference signal on the first subset during the identified first time interval or the second subset during the identified second time interval,
when the first time interval and the second time interval is identified, control the transceiver to receive, from the transmitting apparatus, the at least one reference signal on the first subset during the first time interval and the second subset during the second time interval,
measure a channel quality based on the at least one reference signal,
control the transceiver to transmit, to the transmitting apparatus, the channel quality information related to the channel quality,
obtain a speed of the receiving apparatus,
when the speed is greater than a threshold, control the transceiver to transmit, to the transmitting apparatus, information indicating a time interval to receive the at least one reference signal is the first time interval or the second time interval, and
when the speed is less than the threshold, control the transceiver to transmit, to the transmitting apparatus, information indicating the time interval comprises the first time interval and the second time interval.
10. The receiving apparatus of claim 9 , wherein the information comprises a data type indicating one of a real-time service data type, a non-real-time service data type, a user data type, or a non-user data type.