Data transmission method, indication information sending method and device
A data transmission method and a technology for indicating information, which are applied in the field of data transmission methods, sending methods and devices for indicating information, and can solve the problem of low resource probability
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Embodiment 1
[0120] When the first transmission node is a terminal, the process of the present invention is as follows:
[0121] The UE determines the LBT mechanism and the corresponding related parameters (that is, the above-mentioned LBT parameters);
[0122] The UE uses the preset LBT mechanism to compete for resources on the unlicensed spectrum;
[0123] The UE performs data transmission on the unlicensed frequency spectrum it has competed for.
[0124] Among them, the LBT mechanism that the UE may adopt includes at least one of the following:
[0125] Manner 1: UE does not perform LBT.
[0126] Mode 2: UE only executes LBT with a predefined duration once, without random back-off, or in other words, the back-off value N=0. Wherein, the predefined duration is 25 microseconds or 34 microseconds or other values.
[0127] Method 3: UE executes LBT with random backoff, and the maximum value of random backoff is predefined value 1, and predefined value 1 (corresponding to the above-menti...
Embodiment 2
[0131] This embodiment describes how the transmission node determines the LBT backoff value N and / or the length of the contention window CW in the LBT mechanism and / or LBT parameters in a predefined manner.
[0132] The aforementioned predefined manner refers to the correspondence between the predefined data transmission service type or priority and the LBT mechanism or fallback value N or CW. For example, the LBT mechanism or fallback value N corresponding to different Quality of Service (QoS for short) or service priority is shown in Table 1 below:
[0133] Table 1
[0134]
[0135] For example, the file transfer protocol (File Transfer Protocol, referred to as FTP) service competes for resources according to the LBT parameters corresponding to the lowest level. Browsing webpages belongs to Best effort, and competes for resources according to the LBT parameters corresponding to the third level.
[0136] If there are four service levels or LBT levels, divide all integers ...
Embodiment 3
[0141] This embodiment describes in detail the observation window described in the embodiments of the present invention.
[0142] When the base station determines the mechanism or fallback value corresponding to UE LBT, the observation window (ObservationWindow, OBW for short) used includes one of the following:
[0143] Between two adjacent PUSCH scheduling or transmissions of the same UE, and the time difference between these two PUSCH transmissions is within the predefined range t1, for example, t1 is less than 10ms, such as Figure 10 as shown, Figure 10 is a schematic view of the observation window according to the embodiment of the present invention Figure 1 .
[0144] Continuous k1 (k1 is greater than 1) times of PUSCH scheduling or transmission of the same UE, and the time of these k1 transmissions and the time of scheduling PUSCH this time does not exceed the predefined threshold T, for example, T does not exceed 10ms, such as Figure 11 as shown, Figure 11 is ...
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