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Random access method and terminal

A random access and terminal technology, applied in the field of communications, can solve problems such as terminal random access failure, and achieve the effect of avoiding cell access failure

Active Publication Date: 2019-10-25
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a random access method and a terminal, which solves the problem that the random access of the terminal in the target cell fails because the terminal cannot determine how to use two dedicated random access resources based on SSB and CSI-RS

Method used

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Embodiment Construction

[0075] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0076] It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of t...

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Abstract

The invention provides a random access method and a terminal. The method comprises the following steps: acquiring the beam quality of an available beam for transmitting a target signal, wherein the target signal comprises a channel state indication reference signal CSI-RS and a synchronization signal block SSB; determining an access sequence of the available beams according to the beam quality ofthe available beams; and accessing the target cell through the random access resources corresponding to the available beams in sequence according to the access sequence. According to the invention, when the terminal detects the available beams for transmitting the CSI-RS and the SSB, the access sequence of the SSB-based special random access resources and the CSI-RS-based special random access resources are determined according to the beam quality of the available beams, so that the terminal reasonably utilizes the two special random access resources to access the target cell.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a random access method and a terminal. Background technique [0002] In the fifth generation (5Generation, 5G) mobile communication system, the handover process is based on the long-term evolution (Long Time Evolution, LTE) system handover process, mainly including: measurement configuration, measurement report, handover request, handover confirmation, and terminal initiation in the target cell random access process. However, due to the introduction of multi-beam operation in the 5G system, beam-related information is added in the handover process. Based on the information related to these beams, the handover command can carry the dedicated random access resources reserved by the target cell for the terminal, as well as the Synchronization Signal Block (Synchronization Signal Block, SSB) and the Channel State Information Reference Signal (Channel State Informati...

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Application Information

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IPC IPC(8): H04W74/08H04W16/28H04B7/06H04W48/16
CPCH04B7/0408H04B7/0626H04W16/28H04W48/16H04W74/0833
Inventor 谢芳陈卓刘光毅
Owner CHINA MOBILE COMM LTD RES INST
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