# ITFDS: Channel-Aware Integrated Time and Frequency-Based Downlink LTE Scheduling in MANET
## 2 Proposed Method
### QoS Class Identifier (QCI) and Channel Quality Indicator (CQI)  
In time-based and frequency-based scheduling, the scheduler first selects the user based on its QoS requirement along with fairness and decides its corresponding RBs proportion according to past average throughput achieved and queue length to meet the QoS requirement. For considering QoS requirement and fairness, the LWDF and the past occurred packet loss rate is used. For each user selected in time domain, the frequency domain scheduler allocates the required RBs portion in the channel bandwidth according to current channel conditions. The QCI value for various applications is given in Table 2 The standard CQI for various applications are given in Table 3. The following tables list the QoS class identifiers (QCIs) and channel quality indicators (CQIs) used in the proposed algorithm.  
The fairness index measures that the packet is transmitted within the specified time. The user fairness indeed has been increased. Otherwise, it is incremented according to the communicated data separated by the size of the packet. Transmission time interval (TTI) is measured by separating the packet size of a particular user to achieve the throughput. If the user's packet is smaller than the targeted delay, it will ensure that the user can utilize the resources well for delivering the packet within the time period. In the scheduling process, the user can reach the enhanced fairness index and throughput. Whenever the user count increases, the resources can also increase in parallel. The transmission rate demonstrates that the source can transmit the group of packets without receiving  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \begin{tabular}{c} **Type of Resource** \\ **(00-GBR,** \\ **01- non-GBR)** \\ \end{tabular} & \begin{tabular}{c} **Priority** \\ **of QCI** \\ \end{tabular} & \begin{tabular}{c} **Priority** \\ **Delay (ms)** \\ \end{tabular} & \
\begin{tabular}{c} **Packet Loss** \\ **Ratio** \\ \end{tabular} &
\begin{tabular}{c} **Traffic Type** \\ \end{tabular} \\ \hline
1 & 00 & 2 & 100 & \(10^{-2}\) & Speech Signal \\
2 & 00 & 4 & 150 & \(10^{-3}\) & On-line Video Streaming \\
3 & 00 & 3 & 50 & \(10^{-4}\) & Buffered Video Streaming \\
4 & 00 & 5 & 50 & \(10^{-3}\) & Real-time Applications \\
5 & 01 & 0.7 & 300 & \(10^{-4}\) & IMS Signaling \\
6 & 01 & 2 & 100 & \(10^{-3}\) & Video Streaming \\
7 & 01 & 1 & 300 & \(10^{-4}\) & Buffered Video \\
8 & 01 & 6 & 300 & \(10^{-4}\) & Transmission Control \\
9 & 01 & 7 & 300 & \(10^{-4}\) & Protocol-based \\ \hline \hline \end{tabular}
\end{table}
Table 2: Standard QCI Characteristics defined in LTE (Release 13).  
the acknowledgements. The active connection contains the roundtrip time for transmitting the data packets. The maximum throughput has been achieved for allocating the resource block. A resource block is the tiny unit of resources which could be utilized to the user equipment. The resource block has the parameters of time, frequency with subcarriers for capturing the signals. LTE frame contains the time unit-based parameters like frame, subframe, half frame, symbol, slot, and basic time unit. The frequency units are related with the total amount of sub-carriers and resource blocks. The carrier for implementing the LTE frame is the resource component. It has the value of data with single complex value for producing the data from the signal. User data are converted into a carrier modulation format along with the time domain symbols, which are converted into the frequency domain. For implementing the frequency domain, the downlink and the uplink frames are divided by the frequency with continuous and synchronous transmission.