Phich resource
WebA PHICH resource is identified by the index pair , where is the PHICH group number and is the orthogonal sequence index within the group. For frame structure type 1, the number of PHICH groups is constant in all subframes and given by where is provided by higher … WebThe PHICH resources are normally all assigned in the first OFDM symbol of a subframe, unless the PHICH duration is of the extended type. example ind = ltePHICHIndices( enb , opts ) formats the returned indices using options specified by opts .
Phich resource
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WebPDCCH, PHICH and PCFICH share the resources in the control region of a subframe. So to find the available resources for PDCCH, UE has to know the PHICH configuration only, as PCFICH resources are fixed and known Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest 311 comments: Unknown April 13, 2013 at 7:04 PM WebThe set of resource blocks used for the retransmission on each component carrier are identical to the initial transmission. The control signaling required in the downlink for an uplink retransmission is a HARQ feedback, which is transmitted on PHICH. In the case of a NACK on PHICH, the data is retransmitted.
Web14. máj 2024 · 主要用于传输来自DL-SCH和PCH的数据。 更确切的说,RAR,Paging,SIB,RRC消息(不包括MIB)和用户数据等最终会在PDSCH上传输。 PDSCH是在下行子帧的数据区域(data region)上传输的。 为了接收PDSCH,UE需要先解码PDCCH。 PDCCH携带的DCI指定了在空口上如何传输PDSCH,DCI指定了PDSCH所占的 … Web17. júl 2024 · However, in 5G NR, the PHICH and the PCFICH, are not needed. The PHICH is used in LTE to handle uplink retransmissions and is tightly coupled to the use of a synchronous hybrid-ARQ protocol, but since the NR hybrid-ARQ protocol is asynchronous in both uplink and downlink the PHICH is not needed in NR. The PCFICH, is not necessary for …
WebA PHICH resource is identified by the index pair (n P H I C H g r o u p, n P H I C H s e q). The variable n P H I C H g r o u p is the number of the PHICH group and the variable n P H I C H s e q is the orthogonal sequence index within the group. For more information about the … Web27. okt 2015 · PHICH stands for Physical HARQ Indicator Channel and it goes on Downlink. More about PHICH below, PHICH is a control channel on LTE downlink, that is used to indicate the reception of PUSCH transmission from a mobile/UE. The PHICH indicates either a ACK or a NACK, which the UE will decode to find out if it has to do a retransmission or not.
Web11. jún 2024 · The PHICH groups used by a cell are always allocated to the PHICH even when they are not used to transmit hybrid-ARQ ACKs/NACKs. Therefore, in the control region of a subframe, the 4 REGs in the first symbol used by the PCFICH, plus the 3 REGs used by …
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