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Semi-persistent scheduling method, base station equipment and user equipment

A semi-static scheduling, user equipment technology, applied in the directions of multiple use of transmission paths, transmission modification based on link quality, and payload allocation, etc., can solve problems such as difficulty in supporting URLLC requirements of multiple services

Pending Publication Date: 2020-10-09
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, in the existing NR system, only one SPS configuration (SPS configuration) / CG configuration is supported, which is obviously difficult to support the URLLC requirements of multiple services

Method used

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  • Semi-persistent scheduling method, base station equipment and user equipment
  • Semi-persistent scheduling method, base station equipment and user equipment
  • Semi-persistent scheduling method, base station equipment and user equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0183] In the prior art, for the first type of SPS / CG transmission, if semi-persistent scheduling parameters need to be changed, the base station needs to send high-level signaling to reconfigure all semi-persistent scheduling parameters. For example, for uplink CG PUSCH transmission, the high-level signaling rrc-ConfiguredUplinkGrant information includes time resources, frequency domain resources, antenna port information, reference signal DMRS signal, MIMO related information, modulation and coding information (MCS and TBS), and power control information, etc. . Generally, the time delay for reconfiguration through high-level RRC signaling is relatively large. If the first type of SPS / CG transmission needs to feedback HARQ-ACK to confirm HARQ-ACK, high-layer signaling also needs to configure parameters related to HARQ-ACK feedback, such as HARQ-ACK feedback time information and PUCCH resource information.

[0184]

[0185] In order to change semi-persistent scheduling pa...

Embodiment 2

[0195]In some scenarios, such as supporting different service types, the parameters of multiple sets of SPS / CG configurations are different. In other scenarios, multiple sets of SPS / CG configurations have similar or identical characteristics, so a set of signaling can be used to configure the same / common transmission parameters in these SPS / CG configurations. For example, in order to reduce delay, multiple sets of SPS / CG configuration can be configured for the same URLLC service type. For another example, in order to solve the problem that the period of the time-sensitive service (TSN) is not an integral multiple of the period of the SPS / CG configuration, multiple sets of SPS / CG configurations can be configured for the same TSN service. The multiple sets of SPS / CG configurations have the same frequency domain resource, modulation and coding information, and period, but the starting positions of the time domain are different. For example, there is a time offset between the PDSC...

Embodiment 3

[0226]The configuration signaling of time resources described above, the start symbol and symbol length of SPS / CG PDSCH / PUSCH can reuse the start symbol and symbol in the time resource allocation table (such as PUSCH-TimeDomainResourceAllocation) configured by the base station for scheduling-based PDSCH / PUSCH Length, the time offset between SPS / CG PDSCH / PUSCH and the offset of the first / first set of SPS / CG PDSCH / PUSCH relative to SFN 0 or relative to the time slot where SPS / CG activation signaling is located / The offset of the sub-slot is indicated separately, and the two time offsets can be indicated in independent fields, or can be coded jointly. Another implementation, the starting symbol and symbol length of SPS / CG PDSCH / PUSCH, and the time offset between SPS / CG PDSCH / PUSCH are jointly coded to form a new time resource allocation table dedicated to SPS / CG PDSCH / PUSCH. Or, the starting symbol and symbol length of SPS / CG PDSCH / PUSCH, the time offset between SPS / CG PDSCH / PU...

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Abstract

The invention relates to the technical field of wireless communication and discloses a semi-persistent scheduling method, base station equipment and user equipment. The semi-persistent scheduling method comprises the following steps: sending configuration information of semi-persistent scheduling parameters to user equipment (UE), so that the UE performs semi-persistent scheduling data transmission based on the configuration information; and then performing semi-persistent scheduling data transmission based on the configuration information of the semi-persistent scheduling parameters. According to the method provided by the embodiment of the invention, the low delay requirement of URLLC can be met, a conventional semi-persistent scheduling transmission mechanism can support a higher low delay requirement, and meanwhile, a plurality of semi- persistent scheduling configurations are introduced and different time-frequency resources are allocated to the respective semi-persistent scheduling configurations, so that various services can be supported at the same time.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular, the present application relates to a semi-persistent scheduling method, base station equipment and user equipment. Background technique [0002] The ultra-reliable low-latency communication (URLLC) proposed in 5G requires both delay and reliability. 3GPP Rel-15 can support end-to-end delay less than 1ms and 10 -5 block error rate. With the growth of services such as Industry Internet of things (Industry Internet of things), AR and VR, more stringent requirements have been put forward for URLLC. For example, 3GPP Rel-16 has studied URLLC with higher requirements. 0.5ms~1ms end-to-end delay and 10 -6 block error rate. This poses a challenge to the communication system of NR. At present, the semi-persistent scheduling (Semi-persistent scheduling, SPS) transmission method of the NR system, or the configuration-based scheduling (configured grant, CG) tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L5/00
CPCH04W72/121H04L5/0053H04W72/23H04W72/1263H04L5/0098H04L5/0094H04W72/11H04W72/232H04W72/231H04W72/0446H04L1/1812H04L1/1854
Inventor 王轶孙霏菲付景兴
Owner BEIJING SAMSUNG TELECOM R&D CENT
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