Method of transmitting and receiving signal in a distributed antenna system
AssigneeLG Electronics Inc.
InventorsJin Young Chun, Ji Won Kang, Sung Ho Park, Su Nam Kim, Bin Chul Ihm, Wook Bong Lee
Life of this patent
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Abstract
A method of transmitting a signal from a base station to a user equipment in a distributed antenna system (DAS) comprises equally broadcasting DA common broadcast information, which includes information required for initial access, into a cell through a plurality of DA groups of the base station; and independently broadcasting DA specific broadcast information, which includes information on the number of antennas of each DA group, through each DA group of the base station, wherein the DA group includes one or more DAs.
Claims12
A method of transmitting a signal from a base station to a user equipment in a distributed antenna system (DAS), the method comprising:
- broadcasting distributed antenna (DA) common broadcast information, which includes information required for initial access, into a cell through each of a plurality of DA groups of the base station;
- broadcasting DA specific broadcast information, which includes information on a number of antennas in each DA group, into the cell through each DA group of the plurality of DA groups of the base station, wherein each DA group includes one or more DAs;
- and
- broadcasting a midamble used for channel estimation through each DA group of the plurality of DA groups, wherein the midamble is configured for each respective DA group based on the number of antennas of the respective DA group.
A method of receiving a signal in a user equipment from a base station in a distributed antenna system (DAS), the method comprising:
- receiving distributed antenna (DA) common broadcast information, which includes information required for initial access, from the base station, wherein the base station includes a plurality of DA groups;
- receiving DA specific broadcast information, which includes information on a number of antennas used for downlink transmission in a specific DA group associated with the user equipment, from the base station, wherein the specific DA group includes one or more DAs;
- receiving a midamble configured based on the information on the number of antennas used for downlink transmission in the specific DA group, from the base station;
- and
- performing channel estimation using the midamble.
A base station of a distributed antenna system (DAS), the base station comprising:
- a plurality of distributed antenna (DA) groups, wherein each DA group includes one or more DAs;
- a processor generating:
- DA common broadcast information, which includes information required for initial access,
- DA specific broadcast information, which includes information on a number of antennas in each DA group, and
- a midamble used for channel estimation for each respective DA group by considering the number of antennas of the respective DA group;
- a transmitting module broadcasting:
- the DA common broadcast information into a cell through each of the plurality of DA groups,
- the DA specific broadcast information into the cell through each DA group of the plurality of DA groups, and
- the midamble into the cell through each DA group of the plurality of DA groups;
- and
- a receiving module receiving:
- a result of the channel estimation, from the user equipment, for a specific DA group associated with the user equipment.
A user equipment of a distributed antenna system (DAS), the user equipment comprising:
- a receiving module receiving:
- distributed antenna (DA) common broadcast information, which includes information required for initial access, and
- DA specific broadcast information, which includes information on a number of antennas used for downlink transmission in a specific DA group associated with the user equipment, from a base station that includes a plurality of distributed antennas (DAs);
- and
- a processor performing channel estimation using a midamble of the specific DA group associated with the user equipment, the midamble being received through the receiving module, wherein the DA group includes one or more DAs.
Dependencies are inferred from the claim text.