A kind of feedback method and device
A technology of feedback information and division method, which is applied in the direction of signalling, wireless communication, transmission path sub-channel allocation, etc., and can solve the problem of large feedback overhead
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Embodiment 1
[0230] Embodiment one (method embodiment):
[0231] This embodiment proposes a feedback method, which is applied to the first transmission node, such as image 3 shown, including:
[0232] Step 101: The first transmission node receives a signal containing a transmission block sent by a second transmission node; wherein, the transmission block includes K code blocks, and the K code blocks are divided into P code block sets; wherein , K and P are positive integers, K≥3, 2≤P≤K;
[0233] Step 102: The first transmission node obtains states of P code block sets according to the signal containing the transmission block;
[0234] Step 103: The first transmission node determines at least one kind of feedback information from a preset feedback information set according to the states of the P code block sets;
[0235] Step 104: the first transmission node sends the determined feedback information to the second transmission node. Wherein, the feedback information set includes at leas...
example 1
[0280] In this example, the first transmission node is a terminal, and the second transmission node is a base station:
[0281] Step A1: The terminal receives a signal including a transport block sent by the base station, wherein the transport block includes K=8 code blocks, and the 8 code blocks are divided into P=2 code block sets. Such as Figure 4 As shown, code block set (CB set) 1 includes code blocks CB1, CB2, CB3, and CB4; code block set 2 includes code blocks CB5, CB6, CB7, and CB8. In this example, the code block set adopts the method of continuous division. The number of code block sets P=2 is configured by the base station, and the base station selects P=2 from a set of preset values {2, 3, 4, 5} and sends it to the terminal through downlink signaling.
[0282] Step A2: The terminal determines at least one kind of feedback information from the feedback information set according to the states of the two code block sets, and sends the feedback information to the ...
example 2
[0286] The difference between this example and Example 1 is that, in this example, the number P of code block sets is determined by the size of the transport block. In this example, the size of the transport block belongs to a preset value range, and the set The number of code block sets corresponding to the value interval is P=2, and at this time, the number P of code block sets does not need to be sent through signaling between the base station and the terminal.
[0287] Another difference between this example and Example 2 is that both code block set 1 and code block set 2 receive errors, and the number of correct code block sets is less than the preset threshold 1, or the data of the error code block set is greater than The preset threshold is 1, or the correct rate of the code block set is lower than the preset threshold of 0.5, or the error rate of the code block set is higher than the preset threshold of 0.5. In this case, if the retransmission data only contains packet...
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