Signal

Both Signal and Pride and Prejudice have a lead who went into law enforcement (cop/prosecutor)to find the truth/get justice for a family member that was murdered/falsely accused. Both dramas have leads that tackle cases as part of a close knit investigative unit. The cases seem to be unrelated but are in fact all related to a greater conspiracy connected to the death of the leads family member.
There are dirty cops/corrupt prosecutors in both. Great chemistry between the younger and older generations in the workplace.

.

Both being series dealing with cold cases and both dramas have the same flavor in the cinematography and the OSTs.

Timeline Changes but communication through a Walkie Talkie
Thriller/Mystery
Serial Killer on the loose from the past
it will give you the vibes of what will happen next if the timeline changes

its not korean but its chinese drama.
Its not about murder but its kind of time alerting as well, i think if you liked this drama you will most likely like the one i reccomended

Supernatural element to solve muders. In signal, the use of the radio to solve cold cases. In cheo yong, the use of ghosts to solve murders, some that happened some time in the past with only the ghosts around as proof and other murders that have just happened. Both series highly recommended, although season 2 of cheo yong is much better!

Both are dealing with serial killers though Signal has a Sci-Fic element in it.
Both have action, suspense, thriller elements.
If you like Signal, try Inspector Koo and there is good chance you would like it.

Both are crime dramas produced by tVN, and both are inspired by the movie, "Memories of Murder".

the Japanese drama is an adaptation from the Korean one
I personally liked both so you should try the other if you liked one of them

Both shows focus on cases that have occurred a few ages ago but have never been solved. Both have many cases that are solved throughout the show, with a main focal case in the background.

Both the dramas have some relation in the supernatural happenings. Where as in Signal regarding the messages with the past and in Cheo Yong in relation to the ghosts. Both focus on solving crimes in the society.

Both dramas are of supernatural genre, connecting two time -present and past - to solve cases, revealing missing connections between different ppl. Both dramas have badass female leads. Worth watching. Fighting.

has a realistic plot and involves police in both dramas. Both dramas well written and well directed and you will get more and more hoocked up with the drama as you finish the episodes

"W " shows connection between cartoon world and real world
"Signal" shows connection between past and present world
both drama story is stop the crime or search for culprit

+ Both dramas are extremely well connected crime dramas where the cases are linked to the characters on a personal level.
+ both thematize the psychological aspect => While in Signal the psychological aspect is more debated and analyses, in Burning Ice you can really see psychological methods being used.
+ Both dramas show very well character development.
+ both are connected to past events

If you enjoy the cases in Signal you are bound to enjoy Burning Ice.

both drama connect present and past timeline and try to avoid incidents signal is pure investigation crime show and meet me is romantic crime show