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Random access response method, network device and terminal device

A random access response and network equipment technology, applied in the field of communication, can solve problems such as unsatisfactory requirements

Active Publication Date: 2019-01-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In LTE, the 6-bit RAPID supports up to 64 random access preambles or preamble sequences, which cannot meet the requirements.

Method used

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  • Random access response method, network device and terminal device
  • Random access response method, network device and terminal device
  • Random access response method, network device and terminal device

Examples

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Embodiment Construction

[0050] Embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0051] see Figure 4 , Figure 4 It is a schematic diagram of a communication system architecture involved in an embodiment of the present invention. The communication system includes network equipment and terminal equipment. The communication system may be global system for mobile communication (GSM), code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, global microwave Interconnection access (worldwide interoperability for microwave access, WiMAX) system, LTE system, 5G communication system (such as new air interface (new radio, NR) system, communication system integrating multiple communication technologies (such as communication technology integrating LTE technology and NR technology) system), or the subsequent...

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Abstract

The present application discloses a random access response method, a network device, and a terminal device. The method includes the step that: a network device sends a random access response to a terminal device, and the media access control layer protocol data unit (MAC PDU) of the random access response includes the index field of k bits of random access preambles and / or the index field of k bits of random access resources, wherein k is a positive integer greater than 6. The invention also discloses a corresponding network device and terminal device. With the random access response method, the network device, and the terminal device provided by the technical schemes of the present invention adopted, the index field of the random access preamble greater than 6 bits and / or the index fieldof the random access resources greater than 6 bits may be included in the MAC PDU, and therefore, more random access preambles or random access resources can be supported.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a random access response method, network equipment, and terminal equipment. Background technique [0002] In a long term evolution (long term evolution, LTE) system, a random access (random access, RA) process and a random access response process are as follows: figure 1 shown. During random access, the terminal device first sends a random access preamble to the network device, wherein the preamble carries a preamble sequence, and the preamble sequence distinguishes the terminal device during random access and estimates the amount of time delay. Multiple preamble formats are defined in LTE, and the time length of each format is different. The preamble format adopted by the current network is specified in the downlink system information. In an LTE cell, there are 64 random access preambles. In LTE, after sending a random access preamble, the terminal device needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/002H04W74/0833
Inventor 颜矛文荣陈磊
Owner HUAWEI TECH CO LTD