The most simple, and practical, form of pinging is simply letting a person know, at distance, that you are thinking about them. Thinking about something is known as an intentional state. It is the most cliche form of psychic activity; knowing who is calling or that the phone will ring before it does. Once you get that pinned down, you can send burst of sensations. For example, I am thinking about you, and I am angry. I am thinking about you and I am sad. Rupert Sheldrake has created a simple exercise called the Telephone Telepathy Experiment which would be useful.
The Telephone Telepathy Experiment While you don't have to follow the whole thing, the type of exercise is useful in learning how to ping someone, though, people vary. For example, my mind automatically feels out a particular range where it positions itself to get information about something that it thinks is important, but another person's mind may position itself so that it only gets information from a particular group of people. For example, I am more likely to know that my mother is trying to get my attention versus a complete stranger(this is also mirrored in experimental trials) since my mind will rule it as not important and leave it in the background. For the record, telepathically getting a person's attention, pinging, does not need psi energy, constructs, or anything else of that nature.
It is a telepathic skill. Think of it along the lines of an organism scanning its environment for information that has meaning to it where it positions itself to sense more information. Think of anticipation. It looks, sees what gets its interest, and then it sits and listens based upon things that are associated with it or have meaning to it. So, if you shout something, telepathically, and a person's consciousness has positioned itself away from that intentional burst, it probably won't get their attention. To clarify, I am defining an intentional state as the content of the thought. What the thought is about. All thoughts are predicated by the thing that thinks it, thus, the content of every thought has an established context which is positioned relevant to a series of mental events.
For example, how one feels about a mother is different than what they would think about their own mother. Both are mothers, but the content and thus the feelings would be different due to the positioning of it in regards to mental events(memories, emotions, feelings, etc.). In this sense, we can assign a particular direction in regards to the mind and intentional states/mental content. In this sense, I am positioned closer to my mother, experientially, than the generic a mother or your mother, thus, I am more likely to get information from my mother since I am closer to the origin of the emanating mental content. Keep that in mind while you practice. Also keep in mind that telepathic pining and energy manipulation/construct programming are not the same skills nor are they necessary for the other. Telepathy and clairvoyance are their own abilities. It varies with the person. For example, some telepathic and precognitive hybrids(like myself) can sense that in the future you will want to contact them, so they can predict your future thought prior to you sending it if you are in range. Now, by range, we can think of brackets arranged in frameworks per their associations. Think of something similar to a web or a series of constellations where brackets and how things move about are tied to experiential positions. I am me. I have my thoughts. You are you, and you have your thoughts. If there is an extended relation between my thoughts and your thoughts, a type of rapport, we can be aware of each others thoughts. If you move to me or I move to you, there can be an association which results in the brackets being more open placing us in range of each others thoughts. You can also assign this to physical events as well mental events in a sense. That is what I mean by range. It can be hard to wrap your head around since we are not discussing hard spatial ranges or boundaries(which do not exists in psychic interactions); rather, we have positions, relations, and self-relations within a deeper and more fundamental level of reality which gives rise to what is called the
final cause. The finished product. The end result. Or, in short, physical and mental events.