I have gone through some papers and Ph.D theses in my field but haven't found an explicit discussion about the 'research gap' in their field.
Can anyone give me an example where the author discusses their research gap in detail?
For example: my working domain is 'Networking' and the gap I am addressing is about precise time synchronization requirements. How can I write this in a convincing way that raises it to an issue that should be addressed?
I have got a comment from a reviewer where the reviewer says,
One thing I was wondering while reading: If the time synchronization is such a big issue as described in the paper, why is it rarely mentioned as an issue in other experimental papers.
So I need to address his comment by explicitly saying that, it is the 'research gap' I worked on to cover on that paper. Although the significance, benefits, and others are well mentioned in the paper. But somewhere in the paper, I have to demand that this is 'research/knowledge gap' where work needs to do.
The expression that I have adopted so far:
Until now, there has been little work [references] in specifying or detailing the importance of time synchronization and the stringent timing requirements for Vehicular Ad Hoc Networks. In its underline reason we believe, as the time, time quality and synchronization techniques in VANET have been adopted straightforward by following the WLAN (Wireless Local Area Network) standards, it gets the impression of settling down with the achieved developments already in WLAN. But WLAN is an infrastructure centered asynchronous network where the Access Points (APs) are fixed infrastructures that enable and support routing and communication among low mobility wireless nodes. Such networks are not time critical; therefore, neither precise time synchronization is required nor be achieved due to the message transmission and various layer level delays of the system. Compared with that, VANET consists of both infrastructure based (V2I) and ad-hoc based (V2V) communication. This two sets of communication make the system more challenging. VANET is also exclusively time critical due to its unique characteristics such as high mobility, ad-hoc based dynamic topology, and bandwidth constraint. Road efficiency and life depend on the successful deployment of any such networks. Hence, the synchronization issues in VANET need to be explored in details are discussed in this section.