Beam failure recovery method and terminal
A beam and terminal technology, applied in electrical components, wireless communication, etc., can solve the problems of wasting system signaling resources and non-competitive access resources, frequent switching, etc., to avoid communication quality, reduce waste, and avoid frequent switching of beams Effect
Active Publication Date: 2020-07-28
四川创智联恒科技有限公司
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Problems solved by technology
After the beam is restored, the UE has been moving back and forth between the two candidate beams, which will cause the UE to switch beams frequently and initiate random access
In this case, a lot of system signaling resources and non-contention access resources will be wasted
Method used
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[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
[0029] In the embodiment of the present invention, such as figure 1 As shown, a method for beam failure recovery, the method process includes:
[0030] Process 1: In the case of multiple carriers, the terminal camps on the first beam, and the terminal can detect other candidate beams at the same time. When the first beam meets the beam quality deterioration, the number of times the link signal deterioration indication is reported is greater than the counter setting After the maximum threshold value of , initiate random access on the second beam among the candidat...
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The invention discloses a beam failure recovery method and a terminal, and the method comprises the steps: 1, reporting a link signal variation indication when the terminal insists in the deterioration of the quality of a current access beam, and switching to access a second beam after the number of reporting times is greater than a maximum threshold value; 2, after the terminal finishes switchingthe second beam, measuring the quality of the second beam, and switching to access the first beam when a beam switching condition is met and a measurement result meets a preset condition; 3, after the terminal finishes switching the first beam, measuring the quality of the first beam, and switching to access a second beam when the first beam meets a beam switching condition and a measurement result meets a preset condition; and 4, when the terminal meets the beam switching conditions in the steps 2 and 3 at the same time, repeating the steps 2 to 3 in sequence, and repeatedly switching between the first beam and the second beam. The invention also provides a terminal for beam failure recovery. The beam failure recovery method and a terminal are suitable for a low-speed moving condition, can prevent a user from frequently switching beams, and reduce the waste of system signaling resources.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a beam failure recovery method and terminal. Background technique [0002] In the fifth-generation mobile communication new air interface (New Radio, NR) system, if the user equipment (User Equipment, UE) detects that the current beam signal is deteriorating, it will report the link signal deteriorating indication. When the number of reports reaches the upper layer configuration parameter threshold When the maximum threshold is beamFailureInstanceMaxCount, the UE will trigger a beam failure recovery request. [0003] The beam failure recovery (Beam Failure Recover, BFR) mechanism includes: beam failure detection, new candidate beam identification, beam failure recovery request and other processes. Beam failure recovery means that the UE finds a beam whose channel quality meets the requirements again, that is, the user terminal selects a new available synch...
Claims
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IPC IPC(8): H04W36/00H04W36/06H04W36/30H04W36/32H04W74/08
CPCH04W36/06H04W36/30H04W36/32H04W74/0833H04W36/0058H04W36/0085
Inventor 段雪超
Owner 四川创智联恒科技有限公司