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Signal sending and receiving method and terminal

A technology of sending method and receiving method, which is applied in the field of communication, and can solve the problem that the coverage radius cannot meet the requirements, etc.

Active Publication Date: 2020-10-30
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for NR V2X, due to the requirement to support multiple subcarrier spacing SCS, including 15KHz, 30KHz and 60KHz, etc., for 60KHz subcarrier spacing, its conventional CP length becomes 1 / 4 of 15KHz, considering factors such as delay expansion, The coverage radius that can be supported does not meet the requirements

Method used

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  • Signal sending and receiving method and terminal
  • Signal sending and receiving method and terminal
  • Signal sending and receiving method and terminal

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Embodiment Construction

[0053] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0054] Such as figure 1 As shown, it is the design diagram of V2X Sidelink synchronous broadcast information. Before the UE prepares to transmit services on Sidelink, it first needs to obtain synchronization on Sidelink. In order to expand the coverage of synchronization signals, it is necessary to perform P-SSS / S-SSS signal Time-domain repetition to enhance the detection performance of synchronous signals.

[0055] according to figure 1 As s...

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Abstract

The invention discloses a signal sending method, a signal receiving method and a terminal. The signal sending method comprises the step of sending a synchronization signal block SSB in a time slot, wherein the SSB comprises a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH; the PSS occupies two orthogonal frequency division multiplexing (OFDM) symbols for transmission, the SSS occupies two OFDM symbols to transmit, the pattern of the SSB used in the time slot where the SSB is located under the condition that a conventional cyclicprefix CP is configured is a first SSB pattern, the pattern of the SSB used in the time slot where the SSB is located under the condition that an extended cyclic prefix CP is configured is a second SSB pattern, and the first SSB pattern is the same as the second SSB pattern. According to the method disclosed int he scheme provided by the invention, inter-symbol crosstalk caused by multipath timedelay can be prevented, so that the detection success rate of the PSS and SSS sequences is improved, the decoding success rate of the PSBCH of the receiving side terminal is improved, and coverage radius requirement of the NR V2X is further ensured.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a signal sending and receiving method and terminal. Background technique [0002] In the 5G NR (NR Radio Access, new wireless access technology) V2X system, PC5 port (Sidelink, direct link) is used for direct communication between terminals. Before the business data transmission, it is first necessary to establish synchronization between the two communicating terminals on the PC5 port (Sidelink). The method of establishing synchronization is that one terminal A sends synchronization and broadcast signals, and another terminal B receives the synchronization and broadcast signals sent by terminal A. Once terminal B receives and demodulates successfully, the two terminals can establish synchronization, which is the next step. Communication is ready. [0003] When NR V2X Sidelink sends synchronization information, it needs to use the SSB (Synchronization Signal Block)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04W56/00
CPCH04L27/2655H04L27/2691H04W56/001
Inventor 任晓涛赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD