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Information transmission method, device and computer readable storage medium

An information transmission and information sequence technology, applied in the field of mobile communication, can solve the problems of high complexity, limited coverage enhancement effect, large delay, etc., to achieve the effects of expanding coverage, reducing the complexity of blind detection, and improving the gain of receiving and combining

Active Publication Date: 2021-08-06
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, related technologies only support the merging of SSBs with the same index within 80 ms, and the coverage enhancement effect that can be achieved is limited; and when merging, the terminal needs to assume the location of the current SSB for blind detection, which is complex. Large delay

Method used

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  • Information transmission method, device and computer readable storage medium
  • Information transmission method, device and computer readable storage medium
  • Information transmission method, device and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0338] This embodiment transmits sequences (such as PN sequence, ZC sequence, etc.) on 3 OFDM symbols, wherein the sequence on each symbol indicates the following information:

[0339] Symbol 1: Use 3 sequences to indicate the SSB transmission period, 5ms, 10ms, 20ms;

[0340] Symbol 2: Use 16 sequences to indicate which 5ms the current RIS is located within 80ms;

[0341] Symbol 3: Use m (integer) sequences to indicate the SSB of repeated transmission within 5ms where the current RIS is located, specifically:

[0342] One sequence indication: no SSB QCL;

[0343] A sequence indication: the SSB corresponding to SSB index 2n and 2n+1 is QCL; n=0,1,...

[0344] A sequence indication: SSB corresponding to SSB index 4n, 4n+1, 4n+2, 4n+3 is QCL; n=0,1,…

[0345] A sequence indication: the SSB corresponding to SSB index 8n, 8n+1, 8n+2, 8n+3, ..., 8n+7 is QCL, n=0,1,...

[0346] A sequence indication: SSB index 16n, 16n+1, 16n+2, 16n+3,..., SSB corresponding to 16n+15 is QCL, n=0...

Embodiment 2

[0351] In the first embodiment, the terminal needs to perform a total of 19 times of blind detection on the first two symbols. If the information of the cell ID is carried, the complexity of the blind detection will be greatly increased, and there may be 19*N_CellID times of blind detection. Considering that the information transmitted on the first two symbols is redundant, especially when the SSB transmission period is 10ms or 20ms, it is not necessary to clearly know the 5ms boundary information to perform merging. Therefore, in order to reduce the complexity of terminal blind detection , the following method can be used to indicate, as shown in Table 1:

[0352] The sequence is sent on 3 symbols, where the sequence on each symbol indicates the following information:

[0353]

[0354] Table 1

[0355] It can be seen that in the second embodiment, 4 times of blind detection are required on symbol 1, and according to the detection results on symbol 1, only 4 or 8 times of ...

Embodiment 3

[0357] In this embodiment, only the sequences on symbol 1 and symbol 2 are sent, and the sequence on symbol 3 is not sent, that is, SSBs with different indexes within 5 ms are not supported for merging.

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Abstract

Provided in an embodiment of the present invention are an information transmission method, a device, and a computer readable storage medium. The method comprises the steps of a network side sending an indication signal, the indication signal indicating one or more of the following information: a period of a synchronization / broadcast signal block (SSB); the time domain position of the indication signal; a time domain position of the SSB; the invention relates to a quasi-co-location (QCL) condition of SSBs.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to an information transmission method, device and computer-readable storage medium. Background technique [0002] In the initial synchronization stage, massively connected IoT (mMTC) users need to receive synchronous and broadcast signals in combination due to the need to obtain large coverage gains. According to the current NR synchronization and broadcast signal block (SS / PBCH block, SSB) design, the R15 terminal searches for synchronization and broadcast signals at a period of 20 ms when it initially accesses. Since the PSS and SSS signals do not change with time, they can be merged at a cycle of 20ms, but the transport block (TB) of the physical broadcast channel (PBCH) is generated once every 80ms, which remains unchanged within 80ms and between 80ms Changes may occur, so we can only combine 4 times within 80ms according to the assumption of the maximum pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W4/70H04W24/02H04L5/00
CPCH04W4/06H04W4/70H04W24/02H04L5/0048H04L5/00
Inventor 吴丹胡丽洁徐晓东夏亮
Owner CHINA MOBILE COMM LTD RES INST
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