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A random access method, base station and terminal

A technology of random access and random access parameters, applied in wireless communication, electrical components and other directions, can solve the problems of increasing random access collision probability and affecting terminal power consumption, and achieve the effect of improving data transmission efficiency and reducing collision probability.

Active Publication Date: 2020-02-21
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The random access method of UE in the current narrowband Internet of Things (NB-IoT) is inherited from the LTE network, but due to the characteristics of NB-IoT are very different from the traditional LTE network, in the face of narrowband (200KHz) and large-capacity users, a large number of For small data packet services and a large amount of periodic data upload services, if the UE adopts the traditional competitive random access process, the probability of random access conflicts will increase greatly, which will eventually affect some of the delay and quality of service (QOS, Quality of Service) ) Slightly sensitive IoT services (such as short-term periodic monitoring of dangerous goods, etc.), will also affect terminal power consumption

Method used

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  • A random access method, base station and terminal
  • A random access method, base station and terminal
  • A random access method, base station and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 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:

[0061] Step 301: the base station receives the control information sent by the terminal.

[0062] Here, the control information may specifically be a Radio Resource Control (RRC, Radio Resource Control) message.

[0063] Step 302: When there is a random access change identifier in the control information, extract the data transmission period and QoS level in the control information.

[0064] Here, when the base station receives the control information, for example, when receiving the RRC message of the terminal, it first detects whether the control information contains a random access change identifier; the random access change identifier indicates that the terminal is to change the random access Way. When it is det...

Embodiment 2

[0074] The embodiment of the present invention also provides a random access method, which is applied to a terminal. Figure 4 It is a schematic flowchart of a random access method in Embodiment 2 of the present invention; Figure 4 As shown, the method includes:

[0075] Step 401: After the first competitive random access is successful, the terminal analyzes the service mode, and determines whether to add a random access change identifier in the control information based on the analysis result; the random access change identifier is used to change the random access input method.

[0076] Here, the first random access method of the terminal is a contention-based random access method, that is, after the first successful contention-based random access, the terminal determines whether to change the random access method based on the analysis result of the service mode. input method. Specifically, the terminal determines whether to change the random access mode based on the data...

Embodiment approach

[0077] As an implementation manner, the method further includes: after determining to add the random access change identifier in the control information, adding the data sending cycle and the QoS level to the control information.

[0078] Wherein, the control information may specifically be an RRC message.

[0079] Step 402: the terminal sends control information to the base station.

[0080] Here, the terminal sends control information to the base station, that is, the terminal sends an RRC message to the base station.

[0081] As an implementation manner, the method further includes: the terminal receiving a first random access parameter sent by the base station, and completing a random access process according to the first random access parameter.

[0082] Specifically, this embodiment is implemented based on adding a random access change identifier to the control information in step 401, that is, after the terminal determines to change the random access method, the termin...

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Abstract

The embodiment of the invention discloses a random access method, a base station and a terminal. The method includes: the base station receives the control information sent by the terminal; when there is a random access change identifier in the control information, extracting the data transmission period and the quality of service (QoS) level in the control information; A random access parameter set corresponding to the period and the QoS level is sent, and a first random access parameter is selected from the random access parameter set and allocated to the terminal.

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] In the Long Term Evolution (LTE, Long Term Evolution) system, according to whether there is a risk of collision in the preamble (Preamble) sent by the user equipment (UE, User Equipment), its random access methods can be divided into two categories: competitive random access (all scenarios) and non-contention random access (applicable to handover and downlink data arrival scenarios). Wherein, the competitive random access means that the evolved base station (eNodeB) does not allocate a dedicated preamble (Preamble) to the UE, but the random access is initiated by the UE randomly selecting the Preamble. [0003] The random access method of UE in the current narrowband Internet of Things (NB-IoT) is inherited from the LTE network, but due to the characteristics of NB-IoT are very different ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W72/06H04W74/08
CPCH04W74/002H04W74/085H04W72/563
Inventor 翁玮文曹蕾高晨亮孔露婷
Owner CHINA MOBILE COMM LTD RES INST