CN102804895B

5G,4G

Title

Wireless communication apparatus and wireless communication method

Application Number:

CN2010824350

Publication Date:

12-04-2017

Current Assignee:

PANASONIC CORP

Family ID:

43297441

Application Date:

27-04-2010

Declaring Company:

PANASONIC CORP

Publication Country:

US

Priority Date:

02-06-2009

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Title

Wireless communication apparatus and wireless communication method

Application Number:

CN2010824350

Family ID:

43297441

Publication Country:

US

Publication Date:

12-04-2017

Application Date:

27-04-2010

Priority Date:

02-06-2009

Current Assignee:

PANASONIC CORP

Declaring Company:

PANASONIC CORP

View on Espacenet goto-link

Abstract  Abstract

the intermittently transmitting reference signals under the condition that can prevent the channel quality information requests and reports congestion at a particular resource in the time direction so as to avoid throughput is reduced. sending device (eNB) has in the reference signal (CSI-RS) or timing of sub-frame earlier by for each receiving device in the manner of spreading execution mode of transmitting using PDCCH sending instruction of the CSI request to the reception device (UE1 UE2). each receiving device (UE1 UE2) detects the CSI request from the transmitting device and according to the channel estimation value of CSI-RS received after CSI is calculated. each receiving device (UE1 UE2) followed by interval information according to the CSI report of the advance notice of the given time interval sub-frame and the transmission timing of CSI-RS CSI report has been detected determines its own CSI report and uses the PUSCH transmission includes CSI report value of the feedback signal.

Channel quality information requests and reports in a case of intermittently transmitting reference signals can be prevented from congesting at certain resources in the time direction thereby avoiding the throughput degradation. A transmitting apparatus (eNB) uses a PDCCH to transmit to receiving apparatuses (UE1 UE2) instructions of CSI requests in subframes having timings that are concurrent with or earlier to reference signals (CSI-RS) in such a manner that the transmissions are performed for the respective receiving apparatuses in a distributed fashion. Each of the receiving apparatuses (UE1 UE2) detects the CSI request from the transmitting apparatus and calculates a CSI from a channel-estimated value of the CSI-RS received later. Each of the receiving apparatuses (UE1 UE2) then determines its own CSI report subframe from a CSI report interval information of a given time interval notified of in advance from the subframe in which the CSI request has been detected and from the transmission timing of the CSI-RS and transmits at the timing of that determination a feedback signal which includes a CSI report value by use of a PUSCH.

Channel quality information requests and reports in a case of intermittently transmitting reference signals can be prevented from congesting at certain resources in the time direction thereby avoiding the throughput degradation. A transmitting apparatus (eNB) uses a PDCCH to transmit to receiving apparatuses (UE1 UE2) instructions of CSI requests in subframes having timings that are concurrent with or earlier to reference signals (CSI-RS) in such a manner that the transmissions are performed for the respective receiving apparatuses in a distributed fashion. Each of the receiving apparatuses (UE1 UE2) detects the CSI request from the transmitting apparatus and calculates a CSI from a channel-estimated value of the CSI-RS received later. Each of the receiving apparatuses (UE1 UE2) then determines its own CSI report subframe from a CSI report interval information of a given time interval notified of in advance from the subframe in which the CSI request has been detected and from the transmission timing of the CSI-RS and transmits at the timing of that determination a feedback signal which includes a CSI report value by use of a PUSCH.

Note:

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The information in grey was provided by the patent holder

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