Method for physical control format indicator channel mapping
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04W-072/04
H04L-005/00
출원번호
US-0264264
(2016-09-13)
등록번호
US-RE47190
(2019-01-01)
우선권정보
KR-10-2008-0086368 (2008-09-02)
발명자
/ 주소
Lee, Jung Hoon
Ahn, Joon Kui
출원인 / 주소
LG Electronics Inc.
대리인 / 주소
Dentons US LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A method of mapping symbols of a physical control format indicator channel (PCFICH) is described. A start position of a resource element to map the symbols for the PCFICH is determined by flooring a value, obtained by multiplying the number of resource blocks by a variable proportional to a symbol i
A method of mapping symbols of a physical control format indicator channel (PCFICH) is described. A start position of a resource element to map the symbols for the PCFICH is determined by flooring a value, obtained by multiplying the number of resource blocks by a variable proportional to a symbol index for the PCFICH and then dividing the multiplied result by 2, wherein the resource blocks are transmitted in downlink. The symbols are mapped in the start position. Therefore, a problem of wasting resource elements or not being able to implement mapping can be solved by applying a simple mapping rule while mapping symbols of the PCFICH.
대표청구항▼
1. A base station in a wireless communication system, the base station comprising: means for mapping 16a processor that maps a physical control format indicator channel (PCFICH) symbols to four resource element groups (REGs) in a first orthogonal frequency division multiplexing (OFDM) symbol of a do
1. A base station in a wireless communication system, the base station comprising: means for mapping 16a processor that maps a physical control format indicator channel (PCFICH) symbols to four resource element groups (REGs) in a first orthogonal frequency division multiplexing (OFDM) symbol of a downlink subframe; andmeans for transmittinga transmitter that transmits the mapped 16 PCFICH symbols to a user equipment (UE),wherein the four REGs comprises a first REG including first four resource elements (REs), a second REG including second four REs, a third REG including third four REs s and a fourth REG including fourth four REs,wherein first REs from the first four REs, the second four REs, the third four REs and the fourth four REsresource elements (REs) in the four REGs have positions given by:K0,K0+└NRBDL/2┘*NSCRB/2,K0+└2NRBDL/2┘*NSCRB/2, andK0+└3NRBDL/2┘*NSCRB/2, respectively,wherein the additions are modulo NRBDLNSCRB, wherein K0 is determined as (NSCRB/2)*(NIDcell mod 2 NRBDL),wherein NRBDL indicates a number of resource blocks (RBs) transmitted in a downlink,wherein NSCRB indicates a number of REs per a RB in the frequency domain, andwherein NIDcell is a physical layer cell identifier. 2. The base station of claim 1, wherein the NSCRB is 12. 3. The base station of claim 1, further comprising: means for transmittingwherein the transmitter transmits reference signals to the UE, and wherein each of the first REG, the second REG, the third REG and the four REGfour REGs has 6 contiguous REs in the first OFDM symbol of the downlink subframe, and 2 of the 6 contiguous REs are used for the reference signals. 4. The base station of claim 1, wherein the 16 PCFICH symbols notifynotifies the UE of whether 1, 2 or 3 OFDMa number of symbols in the downlink subframe are used for transmitting a control channel. 5. A user equipment in a wireless communication system, the user equipment comprising: means for receiving 16a receiver that receives a physical control format indicator channel (PCFICH) symbols viaon a first orthogonal frequency division multiplexing (OFDM) symbol of a downlink subframe from a base station, wherein the 16 PCFICH symbols areis mapped to four resource element groups (REGs), wherein the four REGs comprises a first REG including first four resource elements (REs), a second REG including second four REs, a third REG including third four REs and a fourth REG including fourth four REs,wherein first REs from the first four REs, the second four REs, the third four REs and the fourth four REsresource elements (REs) in the four REGs have positions given by:K0,K0+└NRBDL/2┘*NSCRB/2,K0+└2NRBDL/2┘*NSCRB/2, andK0+└3NRBDL/2┘*NSCRB/2, respectively,wherein the additions are modulo NRBDLNSCRB, wherein K0 is determined as (NSCRB/2)*(NIDcell mod 2 NRBDL),wherein NRBDL indicates a number of resource blocks (RBs) transmitted in a downlink,wherein NSCRB indicates a number of REs per a RB in the frequency domain, andwherein NIDcell is a physical layer cell identifier. 6. The user equipment of claim 5, wherein the NSCRB is 12. 7. The user equipment of claim 5, further comprising: means for receivingwherein the receiver receives reference signals from the base station, and wherein each of the four REGs first REG, the second REG, the third REG and the four REG has 6 contiguous REs in the first OFDM symbol of the downlink subframe, and 2 of the 6 contiguous REs are used for the reference signals. 8. The user equipment of claim 5, further comprising: means for acquiringwherein the processor acquires information about a number of OFDM symbols used for a control channel based on the received 16 PCFICH symbols.
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