Method and system for adjusting discontinuous receiving cycle length

Abstract

The invention discloses a method and a system for adjusting a discontinuous receiving cycle length. According to the method for adjusting the discontinuous receiving cycle length, user terminals in an RRC (radio resource control) idle state transmit random access requests to a base station, the base station transmits random access responses to the user terminals and counts the number N_rach of the user terminals transmitting the random access requests at preset time intervals, the user terminals are in RRC connection with the base station according to the random access responses, a current state is modified into an RRC connecting state, the base station counts the number N_con of the user terminals in the RRC connecting state at the preset time intervals, and the discontinuous receiving cycle length of each user terminal is adjusted according to the N_rach and the N_con. Signaling overheads of a PUCCH (physical uplink control channel) and a PRACH (physical random access channel) are represented by the N_rach and the N_con respectively and accordingly can be automatically traced, increase of the signaling overheads is effectively balanced without affecting reduction of energy consumption of the terminals, and the use ratio of system resources is increased.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for adjusting the length of a discontinuous reception period. Background technique [0002] The large-scale development of mobile services and mobile users has brought about explosive growth in data traffic, and has also led to a significant increase in wireless signaling. The widespread popularity of smart phones and mobile Internet applications has further increased the burden of signaling overhead, resulting in an imbalance between wireless signaling and data traffic growth. This "signaling storm" problem may lead to limited system resources, etc. Potential network bottlenecks, reducing network utilization. The LTE (Long Term Evolution, long-term evolution) system has greatly improved the throughput and other aspects, but the current LTE release version has not effectively considered the "signaling storm" problem, so even in the LTE stage will face "Signaling st...

AI Technical Summary

Problems solved by technology

However, the current DRX method mainly considers parameter adjustment based on factors such as service characteristics, delay performance, and energy saving effects, and the consideration of the impact of the DRX mechanism on signaling overhead has not been reported.

In fact, in the parameter configuration process of Active DRX, the existing solutions have an impact on signaling overhead:

[0005] (1) If the Active DRX cycle time configuration is too long, for a UE that does not send data or only sends heartbeat data, it will also be in the RRC_CONNECTED state for a long time, and on the PUCCH (Physical Uplink Control Channel, physical uplink control channel) channel Periodically send channel quality, scheduling and other information, which will definitely affect the use of PUCCH channel resources by other UEs that need frequent data transmission and reception, so there is a problem of unfair channel resource occupation;

[0006] (2) If the Active DRX cycle time configuration is too short, many UEs that transmit and receive data packets infrequently will transfer to the RRC_IDLE state after the Active DRX time expires, and at the next random access time, a large number of UEs will initiate random access at the same time, causing PRACH (Physical Random Access Channel, physical random access channel) channel congestion, causing many other problems that UEs that have data transmission and reception requirements cannot access the channel

[0007] It can be seen that the current Active DRX cycle length configuration cannot effectively balance the signaling overhead, and cannot alleviate the impact of "signaling storm" on the network

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