Random access process processing method and device

A technology of random access process and processing method, applied in the field of random access process processing method and device, can solve the problems of random access failure, affecting user experience, misjudgment of preamble, etc., to expand coverage radius and eliminate coverage radius Constrained, blur-avoiding effects

Active Publication Date: 2022-02-08
GUANGDONG COMM & NETWORKS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the round-trip delay corresponding to the coverage radius is greater than the delay corresponding to Ncs, the problem of misjudgment of the preamble will occur, and the introduction of random access will fail, affecting user experience

Method used

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  • Random access process processing method and device
  • Random access process processing method and device
  • Random access process processing method and device

Examples

Experimental program
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Embodiment 1

[0022] In this embodiment, refer to the attached figure 1 , providing a random access process processing method, including the following steps:

[0023] Step 1: Generate random access preamble transceiving fuzzy mapping table according to cell configuration parameters. In the random access preamble transceiving fuzzy mapping table, each received preamble corresponds to J transmitted preambles, and J is a fuzzy factor.

[0024] Specifically, the cell configuration parameters should at least include preamble duration T_u, preamble repetition number RepeatNum, preamble frequency domain points LRA, cyclic shift length NCS and cell coverage radius R.

[0025] In an optional embodiment, step 1 specifically includes the following steps:

[0026] Step 1.1: Calculate the round-trip delay T_R_rtt corresponding to the cell coverage radius R, T_R_rtt=R*2 / (3*10^8);

[0027] Step 1.2: Calculate the number V of preambles included in a logical root index, V=Floor(LRA / NCS), where the Floor f...

Embodiment 2

[0063] In this embodiment, refer to the attached Figure 5 , providing a device for processing random access procedures, configured to perform any method for processing random access procedures in the foregoing method embodiments, including:

[0064] The parameter calculation module 11 is used to generate a random access preamble transceiving fuzzy mapping table according to the cell configuration parameters. In the random access preamble transceiving fuzzy mapping table, each receiving preamble corresponds to J sending preambles, and J is fuzzy factor; and

[0065] The random access processing module 12 is configured to perform one-to-J response processing on the detected random access preamble based on the random access preamble transceiving fuzzy mapping table.

[0066] Specifically, both the parameter calculation module 11 and the random access processing module 12 are set in the base station.

[0067] In an optional embodiment, the cell configuration parameters include ...

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Abstract

The present disclosure provides a random access process processing method and device. The method includes: generating a random access preamble transceiving fuzzy mapping table according to cell configuration parameters, and in the random access preamble transceiving fuzzy mapping table, each received preamble Corresponding to J transmission preambles, J is a fuzzy factor; based on the random access preamble sending and receiving fuzzy mapping table, a pair of J response processing is performed on the detected random access preamble. The random access process processing method and device provided in the present disclosure respond to multiple ambiguous transmission preambles that may exist in the access preamble, thereby avoiding missed detection caused by ambiguity of the preamble and avoiding the coverage of Ncs constraints The problem that terminals outside the radius cannot be accessed, thereby eliminating the problem of limited coverage radius caused by NCS single-point bottlenecks, further expanding the coverage radius of the access system, and improving application experience.

Description

technical field [0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method and device for processing a random access procedure. Background technique [0002] Nowadays, wireless communication has widely penetrated into various fields, and ubiquitous coverage has become an important direction of communication evolution. In ubiquitous coverage, single-site wide-area coverage is one of the important components. In order to achieve single-site wide-area For domain coverage, the system configuration must be constrained to support the corresponding coverage radius requirements. [0003] Usually, the configuration factors that affect the coverage radius of the access system mainly include GP (Guard Period, guard interval), CP (Cyclic Prefix, cyclic prefix), and Prach capability. GP is used as a time buffer for TDD terminal uplink and downlink switching, and needs to be guaranteed The round-trip delay from the terminal to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08
CPCH04W74/0833H04W74/0866
Inventor 李伟丹黄振涛王志刚刘云召殷瑭蔓
Owner GUANGDONG COMM & NETWORKS INST
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