Communication method and device

A communication method and a technology of a communication unit, which are applied in the field of communication, can solve problems such as increased random access delay and random access failure, and achieve the effects of reducing random access conflicts and improving the success rate of random access

Active Publication Date: 2020-09-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Random access conflicts may cause random access failure and increase random access delay

Method used

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  • Communication method and device
  • Communication method and device
  • Communication method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0113] Example 1: The first CU acquires information about PRACH configurations of N cells from an operation administration and maintenance (OAM for short).

[0114] In Example 1, the OAM may store the PRACH configuration information of the cell supported by each DU, and the first CU may obtain the PRACH configuration information of the cell supported by the corresponding DU through interaction with the OAM. The first CU may obtain from the OAM the information about the PRACH configuration of the cell supported by the second DU and / or each DU connected to the second CU.

example 2

[0115] Example 2: The first CU receives the PRACH configuration information of N cells sent by the second DU.

[0116] In Example 2, the second DU may report the PRACH configuration information of each cell supported by the second DU to the first CU through the F1 interface. In this case, the N cells are one or more cells supported by the second DU.

example 3

[0117] Example 3: The first CU receives the PRACH configuration information of N cells sent by the second CU.

[0118] In Example 3, the first CU may interact with the second CU through the Xn interface to acquire information about PRACH configurations of cells supported by each DU connected to the second CU. In this case, the N cells are one or more cells supported by the DU connected to the second CU.

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Abstract

The invention provides a communication method and device, which can be used for random access optimization. In the method, a CU can send acquired information of PRACH configurations of a plurality ofcells to a DU, and the DU receives the information of the PRACH configurations of the plurality of cells from the CU and performs random access optimization according to the information of the PRACH configurations of the plurality of cells. In the prior art, a base station can adjust the RACH configuration information of the base station according to the PRACH configuration information of an adjacent base station so as to carry out random access optimization, but the method is not suitable for random access optimization under a separated base station architecture. According to the method provided by the invention, one CU can send the PRACH configuration information of the other cells to the DU, so that the DU can perform random access optimization according to the PRACH configuration information of the other cells, thereby improving the random access success rate under a separated base station architecture.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method and device. Background technique [0002] During random access, random access collisions may occur. Random access conflicts may cause random access failure and increase random access delay. [0003] In the new wireless (new radio, NR for short) system, the base station can have a separate architecture, that is, the base station includes two parts: a centralized unit (CU for short) and a distributed unit (DU for short), and one CU can Multiple DUs are connected, and the RACH configuration of a cell supported by a DU is located in the DU. For the separated base station architecture, how to reduce the number of random access failures of terminals is a problem worth studying. Contents of the invention [0004] The embodiment of the present application provides a communication method and device, in order to improve the success rate of ra...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W74/08
CPCH04W74/0841H04W24/02H04W88/085H04W74/0833H04W72/27H04W74/008H04W74/0858
Inventor杨水根亨里克·奥鲁佛松张宏卓马川
OwnerHUAWEI TECH CO LTD