Random access method, base station and terminal

A random access and random access sequence technology, applied in electrical components, wireless communication, etc., can solve the problems of large resource overhead, no standardized solution, base station cannot distinguish different uplink transmission modes of terminals, etc., to meet the requirements of uplink transmission Requirements, Guarantee the effect of uplink coverage

Inactive Publication Date: 2017-08-11
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the terminal is required to support both Single-tone and Multi-tone, for the initial access process, there is no standardization of which transmission method the terminal uses to send random access-related information (including random access signals and Msg3) in the uplink solution
[0005] A direct extension of the existing system is to use the physical random access channel (PRACH, Physical Random Access Channel) transmission method and the Msg3 transmission method of the existing system, but there is the following problem: it needs to be configured for a terminal with the worst coverage level PRACH sequences and resources, for scenarios with a large number of connections, will result in a large overhead of uplink resources
In addition, since the terminal uplink supports both Single-tone and Multi-tone transmission modes, if the configuration and transmission mode of the existing system are used for Msg3, the uplink coverage of the terminal cannot be guaranteed, and the base station cannot distinguish the uplink transmission modes of different terminals. It will not be possible for the base station to efficiently allocate uplink transmission resources for terminals using different uplink transmission modes

Method used

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  • Random access method, base station and terminal
  • Random access method, base station and terminal
  • Random access method, base station and terminal

Examples

Experimental program
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Embodiment 1

[0070] An embodiment of the present invention provides a random access method, which is applied to a base station. image 3 It is a schematic flowchart of a random access method in Embodiment 1 of the present invention; image 3 As shown, the method includes:

[0071] Step 101: The base station configures at least two types of random access parameters to generate configuration information; wherein the random access parameters include at least one of the following parameters: random access sequence, time domain resources, and frequency domain resources.

[0072] In this embodiment, the base station configures at least two types of random access parameters for different uplink transmission modes or different coverage levels, that is, the at least two types of random access parameters respectively correspond to different uplink transmission modes. Alternatively, the at least two types of random access parameters respectively correspond to different coverage levels. The at least...

Embodiment 2

[0085] The embodiment of the present invention also provides a random access method, which is applied to a terminal. Figure 6 It is a schematic flowchart of a random access method in Embodiment 2 of the present invention; Figure 6 As shown, the method includes:

[0086] Step 201: The terminal receives configuration information; the configuration information includes at least two types of random access parameters; the random access parameters include at least one of the following parameters: random access sequence, time domain resources, and frequency domain resources.

[0087] Step 202: Select a type of random access parameter based on its own uplink transmission mode and / or coverage level, and send a random access sequence based on the random access parameter.

[0088] In this embodiment, the terminal receives configuration information, and the configuration information includes at least two types of random access parameters; the random access parameters include at least o...

Embodiment 3

[0091] The embodiment of the present invention also provides a random access method. Figure 7 It is a schematic flowchart of a random access method in Embodiment 3 of the present invention; Figure 7 As shown, the method includes:

[0092] Step 301: The base station configures at least two types of random access parameters to generate configuration information, and sends the configuration information; wherein, the random access parameters include at least one of the following parameters: random access sequence, time domain resources, frequency domain resources .

[0093] Step 302: The terminal receives configuration information, selects a type of random access parameter based on its own uplink transmission mode and / or coverage level, and sends a random access sequence based on the random access parameter; the configuration information includes at least two types of random access parameters. input parameters; the random access parameters include at least one of the following...

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Abstract

Embodiments of the present invention disclose a random access method, a base station and a terminal. The method comprises the steps that the base station is configured with at least two categories of random access parameters so as to generate configuration information, wherein the random access parameters comprise at least one of the following parameters: a random access sequence, a time domain resource, and a frequency domain resource; and the configuration information is sent.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a random access method, base station and terminal. Background technique [0002] The application characteristics of the Internet of Things business put forward the requirements of power consumption, cost, coverage, mobility, security and reliability for the wireless Internet of Things technology, especially the "three low-level services", which require ultra-low power consumption and ultra-low cost and ultra-deep coverage, and the existing cellular technology can no longer meet the future market demand. At present, 3GPP Rel13 is researching narrowband Internet of Things (NB-IoT) technology in the subject of narrowband Internet of Things (NB-IoT). The design goal is that the power consumption can meet the 10-year use time limit, the terminal cost is less than 5 US dollars, and the coverage is 20dB stronger than the existing network; frequency band deployment Scenarios ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W74/08H04W74/0833
Inventor 侯雪颖徐晓东童辉王锐沈晓冬杨光
Owner CHINA MOBILE COMM GRP CO LTD
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