Radio control device, communication control method, and radio base station
A radio control device that can eliminate quality deterioration in a wireless communication system is provided. The radio control device (REC) includes a first delay unit configured to perform delay control based on a first delay time less than a unit processing time of a basic frame, on radio data in units of the basic frames of a CPRI (Common Public Radio Interface) frame, based on a desired data transmission timing in a radio device, and a radio data multiplexing unit configured to multiplex the radio data that has undergone the delay control to the basic frame.
1. A radio control device comprising:
at least one processor; and
at least one memory storing instructions executable by the at least one processor to:
perform delay control on radio data according to a first delay time that is less than a basic frame unit processing time, in units of basic frames of a CPRI (Common Public Radio Interface) frame, based on a desired data transmission timing in a radio device; and
multiplex the radio data that has undergone the delay control, wherein
the delay control is performable on the radio data according to a plurality of delay times less than the basic frame unit processing time, and
the instructions are executable by the at least one processor to further:
select the first delay time from the plurality of delay times, based on the desired data transmission timing;
store a plurality of tables that each include a plurality of tap coefficients corresponding to the plurality of delay times;
select, from the plurality of tables, the table retaining the plurality of first tap coefficients, based on the desired data transmission timing; and
implement a digital filter in which the plurality of first tap coefficients corresponding to the first delay time are set for a multiplier.
2. The radio control device according to claim 1 , wherein
the instructions are executable by the at least one processor to further perform the delay control on the radio data according to a second delay time based on the basic frame unit processing time on the radio data, based on the desired data transmission timing.
3. A communication control method comprising:
performing, by a processor, delay control on radio data according to a first delay time that is less than a basic frame unit processing time, in units of basic frames of a CPRI (Common Public Radio Interface) frame, based on a desired data transmission timing in a radio device;
multiplexing, by the processor, the radio data that has undergone the delay control,
wherein the delay control is performable on the radio data according to a plurality of delay times less than the basic frame unit processing time;
selecting, by the processor, the first delay time from the plurality of delay times, based on the desired data transmission timing;
storing, by the processor, a plurality of tables that each include a plurality of tap coefficients corresponding to the plurality of delay times; and
selecting, by the processor and from the plurality of tables, the table retaining the plurality of first tap coefficients, based on the desired data transmission timing; and
implementing, by the processor, a digital filter in which a plurality of first tap coefficients corresponding to the first delay time are set for a multiplier.
4. A radio base station comprising:
a radio control device and a radio device,
wherein the radio control device is configured to
perform delay control on radio data according to a first delay time that is less than a basic frame unit processing time, in units of basic frames of a CPRI (Common Public Radio Interface) frame, based on a desired data transmission timing in the radio device; and
multiplex the radio data that has undergone the delay control, wherein
the delay control is performable on the radio data according to a plurality of delay times less than the basic frame unit processing time, and
the radio control device is configured to further:
select the first delay time from the plurality of delay times, based on the desired data transmission timing;
store a plurality of tables that each include a plurality of tap coefficients corresponding to the plurality of delay times;
select, from the plurality of tables, the table retaining the plurality of first tap coefficients, based on the desired data transmission timing; and
implement a digital filter in which the plurality of first tap coefficients corresponding to the first delay time are set for a multiplier.