Table 1 The definitions of important parameters of the proposed scheme

α

The predicted number of frames that the traffic generated prior to the BR issue

BR _m,n

The m th bandwidth request issued at the n th frame for a specific MS i

${\mathit{K}}_{\mathit{m}}^{\mathit{rt}}$

Number of frames that BS will request the MS to sleep for the BR _m,n issued by rtPS MS

B _m

The bandwidth that needs to be allocated in the newly generated frames

F _i

The average minimum traffic rate of each frame

M _i

The MRTR of the MS i, M _i indicates that the BS can calculate the average bandwidth that must be allocated in each frame F _i

N _i

BS can estimate the farthest frame of this allocation based on the desired bandwidth specified in BR _m,n

t _frame

The frame duration

β

BS can arrange the delay of the nrtPS traffic because of the sleep period

${\mathit{K}}_{\mathit{m}}^{\mathrm{nrt}}$

Number of frames that BS will request the MS to sleep for the BR _m,n issued by nrtPS MS

${\mathit{P}}_{\mathit{x}}^{\mathit{nrt}}$

Number of bits of preallocated nrtPS bandwidth from the x th frame

BW_frame

Number of bits that BS can allocate for MS in each frame