RA-RNTI determining method and device

A determination method and random access preamble technology, which is applied to the separation device of the transmission path, pilot signal allocation, signaling allocation, etc., can solve the problems of different number of time slots and the inability to use LTE, etc.

Active Publication Date: 2019-03-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0010] In the NR system, for the preamble format of the short sequence, since one slot (slot) may contain multiple PRACH preamble sequences, and for different subcarrier spacing, the number of slots contained in the 10ms radio frame is different , the RA-RNTI cannot be calculated using the existing LTE formula

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  • RA-RNTI determining method and device

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Embodiment Construction

[0106] In the following, some terms used in the embodiments of the present application are explained, so as to facilitate the understanding of those skilled in the art.

[0107] (1) In the embodiments of this application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand their meanings.

[0108] (2) The term "multiple" in the embodiments of the present application refers to two or more, and other quantifiers are similar.

[0109] (3) "And / or", which describes the association relationship of associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists independently. Condition. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0110] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction w...

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Abstract

The invention discloses a RA-RNTI determining method and a device. A base station receives a random access preamble sent by a terminal. The base station determines the RA-RNTI according to the time-frequency resource occupied by the random access preamble, wherein the time-frequency resource is a time-frequency resource of an OFDM symbol level of orthogonal frequency division multiplexing. The base station sends a random access response message, wherein the random access response message comprises downlink control information allocated by the base station to the terminal, and the downlink control information is scrambled by the RA-RNTI. According to the RA-RNTI determining method and the device, determining the RA-RNTI in the random access process of an NR system can be realized.

Description

technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method and device for determining a Random Access-Radio Network Temporary Identifier (RA-RNTI) in a random access process. Background technique [0002] The random access process refers to the process from the terminal sending a random access preamble to try to access the wireless network to the establishment of a basic signaling connection with the network. During the random access process, after sending the random access preamble, the terminal monitors a random access response (random access response, RAR for short, also called Msg2) message scheduled by the base station through a physical downlink control channel (PDCCH). The base station sends the uplink resources allocated to the terminal to the terminal through downlink control information (downlink control information, DCI) in the RAR message. The cyclic redundancy check (CRC) of the DCI is scram...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W74/00H04W74/08H04W72/04
CPCH04L5/0008H04L5/0048H04L5/0082H04W72/0453H04W74/006H04W74/0833H04L5/0053H04W74/008H04L5/0007H04L69/324H04W72/23
Inventor 任斌赵铮达人李铁郑方政
Owner DATANG MOBILE COMM EQUIP CO LTD
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