Downlink cache data reporting method and device

Abstract

The invention discloses a downlink cache data reporting method. According to the method, after an RLC obtains DRX configuration information of UE, the DRX working period and the DRX activation period of the UE are determined according to the DRX configuration information, and the downlink cache data reporting moment of the UE is set according to DRX working period; when sub frame interruption occurs, only downlink cache data of the UE in the DRX working period are reported according to the downlink cache data reporting moment of all UE. In this way, the phenomenon that transmission delay is prolonged due to the fact that the UE in the DRX activation period seizes the reporting number of the downlink cache data size is avoided, and the user experience is effectively guaranteed under the condition that a terminal starts a DRX power-saving mode.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for reporting downlink buffer data. The present invention also relates to a radio link controller RLC. Background technique [0002] At present, the RRC (Radio Resource Control, radio resource control) layer in the LTE (Long Term Evolution, long-term evolution) system configures the DRX (Discontinuous Reception, discontinuous reception) function for the UE (User Equipment, user equipment), so that the UE After the DRX function is turned on, the PDCCH (Physical Downlink Control Channel, physical downlink control channel) channel can be monitored discontinuously, so as to achieve the purpose of power saving of the terminal. After enabling the DRX function, the UE determines whether to monitor the PDCCH according to the current DRX state, and performs corresponding data transmission and reception, while the network side (eNB, base station) performs scheduling accordi...

AI Technical Summary

Problems solved by technology

Generally, the method of periodic timing notification is adopted. With the commercialization of TD-LTE and the rapid expansion of scale, the number of UEs connected to the base station increases sharply. The number of UEs that the RLC notifies the MAC scheduler of the amount of downlink buffered data

For the case where the DRX function is not enabled, it is enough to poll all UEs that need to transmit data in sequence; but for the case where the DRX function is enabled, if the polling is still performed in sequence, it may cause the UE that notifies the amount of downlink buffered data to be in the The DRX activation period cannot be scheduled, but the UE in the DRX inactive period that can be scheduled does not notify the MAC scheduler of the amount of downlink buffered data, resulting in an increase in the overall average waiting time for downlink data transmission, which affects user experience

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