Random access method and terminal

A technology of random access and random access process, applied in the field of communication, can solve problems such as inability to improve well, random access, and no service delay requirements

Active Publication Date: 2018-02-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) The handover process requires random access;
[0010] The current LTE system does not reflect the delay requirements of different services in the random access process, so it cannot guarantee the different delay guarantees of the access process of services with different delay requirements.
At the same time, since the initial transmission and retransmission resources of the random access process are basically the same, in this case, the failure of the initial transmission due to conflicts cannot be well improved during retransmission

Method used

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  • Random access method and terminal
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  • Random access method and terminal

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0116] Such as figure 1 As shown, the random access method provided by the first embodiment of the present invention includes:

[0117] Step 11, obtaining the changed access configuration adopted when the terminal randomly accesses the network again after the random access process;

[0118] In the current LTE mechanism, the initial transmission and retransmission resources of the random access process are basically the same. In this case, the initial transmission failure due to conflicts cannot be improved during retransmission; here When randomly accessing the network again, use the replaced access configuration to improve the success rate and real-time performance of retransmission when the terminal randomly accesses the network;

[0119] Step 12, after the terminal fails to access the network during the random access process, perform random access to the network again according to the replaced access configuration adopted for random access to the network again;

[0120] H...

no. 2 example

[0128] Such as figure 2 As shown, the random access method provided by the second embodiment of the present invention includes:

[0129] The replaced access configuration adopted by the random access network again includes: when configuring other random access resources under the same network access point,

[0130] Step 21, acquiring the first random access configuration resource used by the terminal in the process of random access to the network and the second random access configuration resource used by the terminal to randomly access the network again after being sent by the network access point through a broadcast message; or Obtain the first random access configuration resource carried by the network access point through the system message block, and obtain the second random access configuration resource used for random access to the network again after the random access network process fails according to the first random access configuration resource. Access configurat...

no. 3 example

[0145] Such as Figure 5 As shown, the third embodiment of the present invention provides a random access method, including:

[0146] Step 51, the terminal uses the first frequency to randomly access the network in the high and low frequency overlapping coverage area of ​​the network, and obtains the second frequency used to randomly access the network again after the access fails during the random access network process;

[0147] Step 52: After the terminal fails to access the network during the random access process, it performs random access to the network again according to the replaced second frequency used for random access to the network again.

[0148] Wherein, the first frequency is a frequency within the frequency range used in the high-frequency region, and the second frequency is a frequency within the frequency range used in the low-frequency region; or the first frequency is a frequency within the frequency range used in the low-frequency region frequency, the s...

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Abstract

The invention provides a random access method and a terminal and relates to the technical field of communication. The method comprises the steps of obtaining replaced access configuration employed when the terminal randomly accesses a network again after a process of randomly accessing the network; and randomly accessing the network again according to the replaced access configuration employed when the terminal randomly accesses the network again after the terminal accesses the network unsuccessfully in the process of randomly accessing the network. According to the scheme provided by the invention, a retransmission access success rate of random access sequence can be improved, and the whole random access delay is reduced.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a random access method and a terminal. Background technique [0002] In 5G NR (New RAT, new radio access technology), due to its ultra-large cell and ultra-large user density, when the UE (terminal) needs to access the network according to the requirements of internal high-level business triggers or high-level signaling triggers , due to the large user density, the collision probability of random access will increase. The collision of multiple attempts will further increase the access delay; if the back-off factor of random access is increased, although the failure probability of this transmission can be reduced to a certain extent, it will also increase the delay . [0003] At the same time, different types of slices or services will be supported in the 5G system, that is, different delay requirements need to be reflected, and some slices or services have very...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04W74/0833H04W74/0875H04W74/08
Inventor 许芳丽陈瑞卡潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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