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Signal transmission method, related equipment and system

A signal transmission and signal technology, applied in transmission systems, digital transmission systems, and multiple use of transmission paths, which can solve problems such as lost channels and inability to ensure continuous transmission of system information.

Active Publication Date: 2021-11-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the influence of the listen before talk (LBT) mechanism, for NR (NR unlicensed, NR-U) systems operating in unlicensed frequency bands, network devices may lose channel
Therefore, the flexible RMSI PDSCH resource allocation method designed in NR may cause network equipment to fail to ensure continuous transmission of system information due to channel loss

Method used

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  • Signal transmission method, related equipment and system
  • Signal transmission method, related equipment and system
  • Signal transmission method, related equipment and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0219] This embodiment adopts scheme one, that is, the time position of sending the RMSIPDSCH corresponding to the SS / PBCH block and the time position of sending the SS / PBCH block are consecutively adjacent. Here, the SS / PBCH block may be any SS / PBCH block to be sent.

[0220] Figure 15 A possible resource mapping pattern is shown as an example. Such as Figure 15 As shown, in the scenario where the initial bandwidth part (BWP) is 20MHz and the subcarrier spacing is 60KHz, there are 56 OFDM symbols in the 1ms time window, and the 1ms time window contains 2 SS / PBCH blocks (SS / PBCH block1 and SS / PBCH block2) and the RMSI PDSCH corresponding to the two SS / PBCH blocks. Among them, the two SS / PBCH blocks last for 4 symbols, and the two SS / PBCH blocks are sent at the following time positions: symbols 0-3 and symbols 28-31, and their corresponding RMSI PDSCHs are respectively at the following times The positions are sent: symbols 4-27 and symbols 32-55.

[0221] That is, SS / PBC...

Embodiment 2

[0279] This embodiment adopts the second scheme, that is, the time position of sending the SS / PBCH block (carrying the MIB), the time position of sending the RMSI CORESET corresponding to the SS / PBCH block, and sending the RMSI PDSCH corresponding to the SS / PBCH block (carrying the RMSI CORESET). ) are consecutively adjacent in time. Here, the SS / PBCH block may be any SS / PBCH block to be sent.

[0280] In the second embodiment, according to the regulations in the NR, the resource configuration of the RMSI CORESET is indicated by the PBCH in the SS / PBCH block, and the resource configuration of the RMSI PDSCH is indicated by the RMSI CORESET.

[0281] Figure 18 A possible resource mapping pattern is shown as an example. Such as Figure 18 As shown, in the scenario where the initial partial bandwidth (BWP) is 20MHz and the subcarrier spacing is 60KHz, there are 56 OFDM symbols in the 1ms time window. In a typical configuration as described in the foregoing, the RMSI PDSCH ca...

Embodiment 3

[0319] Embodiment 3 provides a resource mapping method of SS / PBCH block and RMSI PDSCH in the ECP scenario.

[0320] When the radius of the cell to be supported by the NR-U is relatively large, in order to cope with multipath interference, an Extended Cyclic Prefix (ECP) needs to be adopted. For ECP, in the scenario where the initial bandwidth is 20MHz and the SCS is 60KHz, the 1ms time window contains 48 OFDM symbols. When the RMSI PDSCH payload size is 1000 bits and the RMSIPDSCH uses Type 1 DMRS of 1 symbol, the RMSI PDSCH lasts for 20 OFDM symbols. At this time, if Figure 20 As shown, the two SS / PBCH blocks and their corresponding RMSI PDSCH just occupy all OFDM symbols in the 1ms time window. In this way, blank symbols can be avoided in the 1ms time window, and network devices can avoid the need to send other downlink signals to fill blank symbols.

[0321] For ECP, in other bandwidth and SCS scenarios, the number of symbols contained in the 1ms time window is differe...

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Abstract

A signal transmission method, related equipment and system, the method comprising: the network equipment sends the synchronization signal / physical broadcast channel block SS / PBCH block and the remaining minimum system information physical downlink channel RMSI PDSCH corresponding to the SS / PBCH block, and sends the The time position of the RMSI PDSCH is consecutively adjacent to the time position of sending the SS / PBCH block, the SS / PBCH block carries first indication information, and the first indication information indicates the duration of the RMSI PDSCH. The above solution can realize the continuous transmission of system information in the NR‑U system and avoid channel loss.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a signal transmission method applied to an unlicensed frequency band, related equipment and a system. Background technique [0002] A synchronization signal burst set (synchronization signal burst set, SS burst set) is defined in a new air interface (new radio, NR). It is mainly used for terminal (including user equipment (user equipment, UE)) to perform initial access / system message update / beam (beam) management. The sending cycle of SS burst set can be 5 / 10 / 20 / 40 / 80 / 100ms. figure 1 A possible structure of the SS burst set is shown, and the SS burst set is composed of several SS / PBCH blocks. SS / PBCH block is a signal structure suitable for 5G and subsequent communication systems. The SS / PBCH block may also be called a synchronization signal block (synchronization sigal block, SSB), or may have other names, which are not limited in this application...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0053H04L5/0007H04L5/0094H04W72/0446H04W72/23H04W72/04H04L5/00
Inventor 吴霁朱俊贾琼
Owner HUAWEI TECH CO LTD