Method and device for enhancing uplink coverage, and base station
A technology for enhancing the uplink and base station, which is applied in the direction of error prevention/detection, digital transmission system, and error prevention using the return channel. Effect
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Example Embodiment
[0049] Example one
[0050] In this example, it is assumed that the enhanced Node B serves the UE and the uplink service has been activated.
[0051] figure 2 It is a schematic diagram of implementing the first transmission of uplink UL transmission block through HARQ process bundling according to the embodiment of the present invention, such as figure 2 As shown, within the range of the transmission time interval TTI 1, the enhanced Node B carries the UL for HARQ process 1 through the Physical Downlink Control Channel (PDCCH, Physical Downlink Control CHannel) included in the Down Link (DL) bandwidth. The grant information allocates HARQ process 1 (corresponding to the transmission time interval TTI 5) resources for the UE to transmit uplink transport blocks; similarly, within the range of the transmission time interval TTI 6, the enhanced Node B uses the UL grant information about HARQ process 2 as The UE allocates resources for the HARQ process 2 (corresponding to the transmis...
Example Embodiment
[0054] Example two
[0055] In this example, it is assumed that the enhanced Node B serves the UE and the uplink service has been activated.
[0056] The enhanced Node B informs the UE of the following information through the radio frequency resource control signaling carried in the UE-specific system message: TTI bundling enable flag, bundling length, and RV sent in consecutive bundling subframes related to TTI bundling. Specifically, in this example, assuming that the TTI bundling enable flag is set to "1", it means that the TTI bundling function is enabled, the bundling length is 4, and the redundant version of the continuous bundling subframe transmission related to TTI bundling is: { RV0, RV1, RV2, RV3}.
[0057] The UE receives and decodes the radio frequency resource control signaling in the system message, and obtains and saves the following information: TTI bundling enable flag, bundling length, and RV information sent in consecutive bundling subframes related to TTI bundli...
Example Embodiment
[0063] Example three
[0064] In this example, it is assumed that the enhanced Node B serves the UE and the uplink service has been activated. It is assumed that according to the method described in the first embodiment, the UL transmission block has been completed in the first transmission attempt in the two HARQ processes.
[0065] Figure 4 It is a schematic diagram of implementing the retransmission of uplink UL transport blocks through HARQ process bundling according to an embodiment of the present invention, such as Figure 4 As shown, within the transmission time interval span from the beginning of the transmission time interval TTI 1 to the end of the transmission time interval TTI 4, the enhanced Node B receives the first transmission attempt RV of HARQ process 1, and according to the first transmission attempt RV of HARQ process 1. Decode the UL transport block; within the transmission time interval TTI5, the enhanced Node B sends an ACK / NACK response related to the first...
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