eed to be paid in the evolved RAN. 10.5.1 Relative Time Budget Analysis As shown in Figure 10-31 and Figure 10-32, to maintain the relative time error budget between two radios at the antenna interface, the transport design needs to ensure that the maximum absolute time error (max|TE|) from the common master clock to the end radio interface is within the defined lim- its. As a rule of thumb, the network time budget from the common master to the radios should be less than or equal to half of the relative requirement to ensure that the relative time error between two radios is achieved. The maximum absolute relative time error (max|TER) at the UNI between two radios that are sourcing their time from a common master clock can be calculated for category A and B deploy- ment use cases (see Table 10-17) by using the following equations. Category A Case 1.2 and case 2 are both relevant for category A deployments. The maximum relative TE can be determined per these equations: Case 1.2: max TER = 130ns-2 xTEeRE/RE-2xTET-TSC=60ns = Case 2: max TER = 130ns-2 X TEeRE/RE 70ns To calculate the maximum relative TE, max|TER, for case 1.2, |TEeRE/RE| at the input of the eRE/RE is 20 ns (as per Table 10-18) and the defined TET-TSC for case 1.2 is 15 ns. In case 2, the T-TSC is integrated into the radio equipment and TEeRE/RE at the input of the eRE/RE is 30ns (as per Table 10-18). Remember, these values of 60 ns and 70 are the maximum relative TE that is allowed between the two paths to the radio at each respective UNI. It defines the network budget for TE allowed between the UNI for each radio and the common master clock. Category B Case 1.1, case 1.2, and case 2 are relevant for category B deployments. The maximum relative TE for category B deployment can be determined as per these equations: Case 1.1: max TER 260ns-2 X TEeRE/RE|-2 x TET-TSC = 100ns Case 1.2: max TER = 260ns-2 TE RE/RE|-2 X TET-TSC 190ns Case 2: max TER = 260ns-2 X TEeRE/RE 200ns calculate the maximum relative TE, max TER for case 1.1, TEeRE/RE input the eRE/RE 