Heterogeneous networking(Het Net) has been introduced to HSPA+ to enhance the system performance in a cost-efficient way. The uplink-downlink(ULDL) mismatch caused by heterogeneous deployment reduces performance in the HSPA+ system. To mitigate this mismatch, enhanced dedicated channel(E-DCH)decoupling has been proposed. However, control channels for UL cause undesirable reception delay. In this paper, we focus on delay in co-channel HSPA+ Het Net and propose adaptive grey prediction(AGP) for delay compensa...