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Access signal generating method and access signal generating device

A random access signal, random access channel technology, applied in the field of communication

Active Publication Date: 2017-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a method and device for generating an access signal to solve the access problem of different types of terminals

Method used

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  • Access signal generating method and access signal generating device
  • Access signal generating method and access signal generating device

Examples

Experimental program
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Embodiment 1

[0287] Figure 5 It is a subset of time-frequency resources in an embodiment of the method for generating random access signals in the present invention Schematic diagram of the structure of the time-domain signal.

[0288] Such as Figure 5 As shown, in the wireless communication system, the subcarrier spacing Δf of the random access channel configured by the system is 15KHz, and the time domain symbol length is equal to That is 66.7us (microseconds).

[0289] Terminal 1 sends a random access signal through a random access channel. Among them, the random access channel resources selected by terminal 1 are taken from M (M is greater than or equal to 1) time-frequency resource sets Set m , where 1≤m≤M. set m In the frequency domain, it includes 4 subcarriers, in the time domain, the length is 4ms, and it includes 4 time segments, each time segment length is 15 time domain symbols, namely T n = 1 ms. set m Include 16 subsets of time-frequency resources Such as Fig...

Embodiment 2

[0300] Image 6 A time-frequency resource subset of another embodiment of the random access signal generation method of the present invention Schematic diagram of the structure. Such as Image 6 As shown, in the wireless communication system, the base station configures random access channel time-frequency resources, wherein the random access channel time-frequency resources are composed of one or more time-frequency resource sets (time-frequency resource sets are denoted as Set m ), where m is the time-frequency resource set Set m The number of m starts from 1. set m It includes 2 subcarriers in the frequency domain, the subcarrier spacing Δf is 15KHz, and the length in the time domain is 2ms, and includes 2 time periods, each time period is 15 time domain symbols, that is, T n =1 ms, the length of each time-domain symbol is equal to 66.7 us (microseconds). set m Include 4 subsets of time-frequency resources Such as Image 6 as shown, One subcarrier is occupied i...

Embodiment 3

[0322] Figure 7 A time-frequency resource subset of another embodiment of the random access signal generation method of the present invention Schematic diagram of the structure of the time-domain signal. Such as Figure 7 As shown, in the wireless communication system, the subcarrier spacing Δf of the random access channel configured by the system is 15KHz, and the time domain symbol length is equal to That is 66.7us (microseconds).

[0323] Terminal 1 sends a random access signal through a random access channel. Among them, the random access channel resources selected by terminal 1 are taken from M (M is greater than or equal to 1) time-frequency resource sets Set m , where 1≤m≤M. set m In the frequency domain, it includes 2 subcarriers, in the time domain, the length is 2ms, and it includes 2 time periods, each time period is 15 time domain symbols, namely T n = 1 ms. set m Include 4 subsets of time-frequency resources Such as Figure 7 as shown, In the freq...

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Abstract

The invention discloses an access signal generating method and an access signal generating device. The access signal generating method comprises steps that a second node is used to select M1 time frequency resource sets Setm from random access channel time frequency resources configured by a first node, and M1 is an integer greater than or equal to one, and the random access channel time frequency sources are formed by one time frequency resource set Setm or a plurality of time frequency resource sets Setm; the Stem comprise / s a plurality of F subcarriers on a frequency domain, and a length of a time domain resource is Tm, and F is an integer greater than or equal to one, and N is an integer greater than or equal to one, and m is the serial number of the time frequency resource set Setm, and m starts from one; the second node is used to transmit random access signals to the first node on the M1 time frequency resource sets Setm. Access of different types of terminals is realized, and therefore the second node is improved, and MTC UE performance is improved, and therefore the access quality of the MTC UE is improved.

Description

technical field [0001] The invention relates to communication technology, in particular to a method and device for generating an access signal. Background technique [0002] Machine Type Communication (MTC for short) User Equipment (UE for short) (hereinafter referred to as MTC UE), also known as Machine to Machine (M2M for short) user terminal, is the main application form. In the 3GPP technical report TR45.820V200, several technologies suitable for cellular-level IoT are disclosed, among which NB-IoT technology is the most eye-catching. Considering that the number of user communication devices supported in the Internet of Things is very large, there will be many types of terminals supported, for example, there are terminals that only support a single subcarrier baseband processing capability and terminals that can support multiple subcarrier baseband processing capabilities. So how can the base station ensure that various types of terminals are successfully connected to ...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04W74/08
CPCH04W48/16H04W74/0833
Inventor 刘锟鲁照华戴博夏树强陈宪明石靖张雯方惠英
Owner ZTE CORP
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