Method for transmitting uplink data in wireless communication system supporting narrowband internet of things, and apparatus therefor
A technology of wireless communication system and narrowband Internet of Things, applied in wireless communication, multiplexing communication, orthogonal multiplexing system, etc., can solve problems such as resource shortage
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Embodiment 1
[0431] A method in which SPS configuration is performed through RRC signaling and (re)activation / deactivation / retransmission of SPS operation is performed through signaling or Downlink Control Information (DCI) may be considered.
[0432] Specifically, similar to Semi-Persistent Scheduling (SPS) operating in connected mode, the SPS configuration to be UE-specific may be delivered through RRC signaling. Thereafter, the UE detects DCI or detects a specific signal to be indicated from the base station with (re)activation, deactivation or retransmission related to SPS operation.
[0433] In this case, the following method can be considered as a detailed method for instructing (re)activation, deactivation, or retransmission by using Downlink Control Information (DCI).
Embodiment 1-1
[0435] Methods for introducing a new search space for idle mode SPS operation can be considered.
[0436] Specifically, legacy search spaces can be maintained and new search spaces can be introduced for transmission / reception according to Semi-Persistent Scheduling (SPS).
[0437] The new search space can be a UE specific search space or a common search space. In case of a common search space, (re)activation, deactivation or retransmission may be indicated to the group of UEs.
[0438] Hereinafter, the new search space is referred to as a semi-persistently scheduled search space (SPS-SS). Parameters (Rmax, G, alpha offset, etc.) for configuring legacy search spaces (SS) may additionally require search space period, search space monitoring duration, etc. as parameters for semi-persistently scheduled search spaces (SPS-SS) .
[0439] The search space period means the period during which the UE should wake up in order to monitor the search space. The starting point of the sea...
Embodiment 1-2
[0456] A method for adding specific parameters (eg, monitoring window, monitoring period, etc.) to the general search space can be considered.
[0457] Specifically, a method similar to Embodiment 1-1 but without introducing a new search space may be additionally considered. That is to say, the search space period, the search space monitoring duration, etc. proposed in the above embodiment 1-1 can be additionally set in a conventional search space (eg, a UE-specific search space or a common search space).
[0458] Compared with Embodiment 1-1, since no new search space is introduced, there is no need to provide new search space information through radio resource control (RRC). The remaining operations are similar to those in Example 1-1.
[0459] The reason why this embodiment is advantageous is that similar to Embodiment 1-1, UE in idle mode does not need to monitor all search spaces, but the number of search space monitoring increases compared to the conventional scheme wit...
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