Invention Publication
EP2795860A1 ETABLISSEMENT DE L'INDICATEUR DE QUALITE D'UN CANAL RADIO PAR DECORRELATION DES CONDITIONS RADIO ET DE L'ACTIVITE RESEAU
审中-公开
质量指示器无线电信道的通过广播和网络活动条件的图形收养关系
- Patent Title: ETABLISSEMENT DE L'INDICATEUR DE QUALITE D'UN CANAL RADIO PAR DECORRELATION DES CONDITIONS RADIO ET DE L'ACTIVITE RESEAU
- Patent Title (English): Establishing the quality indicator of a radio channel by decorrelating radio conditions and network activity
- Patent Title (中): 质量指示器无线电信道的通过广播和网络活动条件的图形收养关系
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Application No.: EP12806592.7Application Date: 2012-11-29
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Publication No.: EP2795860A1Publication Date: 2014-10-29
- Inventor: PHAN HUY, Dinh Thuy , DIASCORN, Vincent
- Applicant: Orange
- Applicant Address: 78, rue Olivier de Serres 75015 Paris FR
- Assignee: Orange
- Current Assignee: Orange
- Current Assignee Address: 78, rue Olivier de Serres 75015 Paris FR
- Priority: FR1161957 20111219
- International Announcement: WO2013093271 20130627
- Main IPC: H04L27/26
- IPC: H04L27/26 ; H04B17/00 ; H04L5/00 ; H04J11/00
Abstract:
The invention relates to a method for establishing a quality indicator (CQI) of a radio transmission channel in a first cell of a cellular network using a plurality of orthogonal frequency-division multiplexed subcarriers for transmitting data, said method including: a first transmitter device (NB
1 ) located in the first cell transmitting (11) a reference control signal (SP
1 ) including a total-load control signal (SP
CT ) modulating one or more of said orthogonal subcarriers, during one or more first symbol times dedicated to the transmission of symbols other than data symbols, and a useful-load control signal (SP
CE ) modulating one or more orthogonal subcarriers during at least one second symbol time dedicated to the transmission of data symbols; for every cell adjacent to the first cell in the cellular network, a transmitting device (NB
2 ) located in said adjacent cell transmitting (13) an interfering control signal (SP
2 ) modulating, during the first symbol time(s) during which the total-load control signal (SP
CT ) modulates one or more subcarriers, said subcarrier modulated by the total-load control signal (SP
CT ); a receiving device (M) located in the first cell measuring (20) a quality indicator of the channel under the total load (CQI
CT ) using the total-load control signal (SP
CT ) and a quality indicator of the channel under the useful load (CQI
CE ) using the useful-load control signal (SP
CE ); and determining (30) the quality indicator (CQI) of the radio transmission channel according to the quality indicator of the channel under the useful load (CQI
CE ) and the quality indicator of the channel under the total load (CQI
CT ).
1 ) located in the first cell transmitting (11) a reference control signal (SP
1 ) including a total-load control signal (SP
CT ) modulating one or more of said orthogonal subcarriers, during one or more first symbol times dedicated to the transmission of symbols other than data symbols, and a useful-load control signal (SP
CE ) modulating one or more orthogonal subcarriers during at least one second symbol time dedicated to the transmission of data symbols; for every cell adjacent to the first cell in the cellular network, a transmitting device (NB
2 ) located in said adjacent cell transmitting (13) an interfering control signal (SP
2 ) modulating, during the first symbol time(s) during which the total-load control signal (SP
CT ) modulates one or more subcarriers, said subcarrier modulated by the total-load control signal (SP
CT ); a receiving device (M) located in the first cell measuring (20) a quality indicator of the channel under the total load (CQI
CT ) using the total-load control signal (SP
CT ) and a quality indicator of the channel under the useful load (CQI
CE ) using the useful-load control signal (SP
CE ); and determining (30) the quality indicator (CQI) of the radio transmission channel according to the quality indicator of the channel under the useful load (CQI
CE ) and the quality indicator of the channel under the total load (CQI
CT ).
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