Operation method in dormant bwp based on initial access, and terminal using method
Pending Publication Date: 2022-09-29
LG ELECTRONICS INC
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Benefits of technology
The patent solves a problem where a device can accidentally be transferred to another default mode when it is in a power-saving mode. This is because the device does not use the same timer that causes inactivity in the current mode. The technical effect is that the device stays in the intended mode and avoids unintended transfers during power-saving mode.
Problems solved by technology
Massive machine-type communication (MTC), which provides a variety of services anytime and anywhere by connecting a plurality of devices and a plurality of objects, is also one major issue to be considered in next-generation communication.
Method used
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case b
[0089]subcarrier spacing 30 kHz: The first symbols of candidate SS / PBCH blocks have an index of {4, 8, 16, 20}+28*n. For subcarrier frequencies below or equal to 3 GHz, n=0. For subcarrier frequencies above 3 GHz and below or equal to 6 GHz, n=0, 1.
case c
[0090]subcarrier spacing 30 kHz: The first symbols of candidate SS / PBCH blocks have an index of {2, 8}+14*n. For subcarrier frequencies below or equal to 3 GHz, n=0, 1. For subcarrier frequencies above 3 GHz and below or equal to 6 GHz, n=0, 1, 2, 3.
case d
[0091]subcarrier spacing 120 kHz: The first symbols of candidate SS / PBCH blocks have an index of {4, 8, 16, 20}+28*n. For subcarrier frequencies above 6 GHz, n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18.
[0092]Case E—subcarrier spacing 240 kHz: The first symbols of candidate SS / PBCH blocks have an index of {8, 12, 16, 20, 32, 36, 40, 44}+56*n. For subcarrier frequencies above 6 GHz, n=0, 1, 2, 3, 5, 6, 7, 8.
[0093]The candidate SS / PBCH blocks within the half-block may be indexed on the time axis in an ascending order starting from 0 to L−1. From one-to-one mapping to the index of a DM-RS sequence transmitted within the PBCH, the UE has to determine 2 LSBs of the SS / PBCH block index for each half-frame when L=4 and 3 LSBs when L>4. When L=64, the UE has to determine 3 MSBs of the SS / PBCH block index for each half-frame according to the PBCH payload bits āĀ+5, āĀ+6, and āĀ+7.
[0094]The indexes of SS / PBCH blocks in which the UE is unable to receive other signals or channels wi...
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Abstract
The present specification provides a method by which a terminal performs initial access in a wireless communication system, comprising: transmitting a random access (RA) preamble to a base station; receiving a random access response (RAR) from the base station; receiving dormant bandwidth part (BWP) configuration information from the base station, the dormant BWP configuration information being information about a downlink BWP used as a dormant BWP, from among one or more downlink BWPs set to the terminal; receiving, from the base station, downlink control information (DCI) notifying the activation of the dormant BWP; and stopping physical downlink control channel (PDCCH) monitoring on the dormant BWP, wherein a BWP inactivity timer, which is a timer for the transition to a default BWP, is not used on the basis of the activation of the dormant BWP.
Description
BACKGROUND OF THE DISCLOSUREField of the Disclosure[0001]The present disclosure relates to wireless communication.Related Art[0002]As a growing number of communication devices require higher communication capacity, there is a need for advanced mobile broadband communication as compared to existing radio access technology (RAT). Massive machine-type communication (MTC), which provides a variety of services anytime and anywhere by connecting a plurality of devices and a plurality of objects, is also one major issue to be considered in next-generation communication. In addition, designs for communication systems considering services or user equipments (UEs) sensitive to reliability and latency are under discussion. Introduction of next-generation RAT considering enhanced mobile broadband communication, massive MTC, and ultra-reliable and low-latency communication (URLLC) is under discussion. In the disclosure, for convenience of description, this technology may be referred to as new RA...
Claims
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Application Information
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Patent Type & Authority Applications(United States)
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