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Method, network device and terminal device for contention random access

A technology of terminal equipment and network equipment, applied in the field of communication

Active Publication Date: 2020-08-18
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, it is possible for two carriers to multiplex RAR

Method used

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  • Method, network device and terminal device for contention random access
  • Method, network device and terminal device for contention random access
  • Method, network device and terminal device for contention random access

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0063] figure 1 It is an example of the application scenario of the embodiment of the present invention.

[0064] Such as figure 1 As shown, the terminal equipment may have one downlink carrier and two uplink carriers (such as figure 1 shown, the first uplink carrier and the second uplink carrier). Specifically, the first uplink carrier and the downlink carrier may be carriers on the NR high frequency band, and the second uplink carrier may be a carrier on the LTE low frequency band. It should be understood that figure 1 The illustrated terminal device having two uplink carriers is only an exemplary description, and is not specifically limited in this embodiment of the present invention. For example, the terminal device may also support three uplink carriers and so on.

[0065] It should be understood that the motivation for introducing the second uplink carrier is to improve the uplink coverage of the NR high frequency band.

[0066] Specifically, since the uplink power...

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PUM

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Abstract

Provided are a method for contention random access, a network device and a terminal device. The method includes: the network device receives the first preamble sent by the terminal device on the first uplink carrier or the second uplink carrier, the frequency point of the first uplink carrier is different from the frequency point of the second uplink carrier; the network device Sending a medium access control MAC protocol data unit PDU to the terminal device, where the MAC PDU includes a first medium access control MAC random access response RAR corresponding to the first preamble. The method in the embodiment of the present invention enables the terminal device to effectively distinguish which uplink carrier the received first MAC RAR is the preamble RAR sent on.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication, and more specifically, to a method for contention random access, a network device and a terminal device. Background technique [0002] With people's pursuit of speed, delay, high-speed mobility, energy efficiency and the diversity and complexity of business in future life. The 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) international standards organization begins to develop the fifth generation mobile communication technology (5-Generation, 5G). During the early deployment of New Radio (NR), complete NR coverage is difficult to obtain, so typical network coverage is wide-area Long Term Evolution (LTE) coverage and NR island coverage mode. And with so much LTE deployed below 6 gigahertz (GHz), there is very little sub-6 GHz spectrum available for 5G. Therefore, NR must study spectrum applications above 6 GHz, while high-band coverage is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04W72/04H04L5/00
CPCH04W74/0833H04W74/004H04W74/085H04L5/0053H04L5/001H04L5/0091H04W76/11H04W74/0808H04W74/0866H04W80/02
Inventor 杨宁
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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