Method and device for allocating cache quene threshold, and its flow control method and device

Abstract

The invention discloses a buffer queue threshold configuring method and device, for dynamically configuring MAC-hs buffer queue threshold in wideband code division multiple access (WCDMA) system, and arranging at least two data waiting delay parameters in buffer queue; obtaining data output velocity V in the buffer queue; and using the product of each waiting delay parameter and data output velocity V to configure the threshold of the current buffer queue. And it also discloses a flow control method and device, after the above threshold is updated, regulating data input bandwidth of the buffer queue and making flow control. According to the data output velocity of the buffer queue, it correspondingly regulates the buffer queue threshold and controls the flow, thus making the data length in the buffer queue being in a proper range, and assuring the buffer queue can provide enough data for aerial interface to transmit, reducing data length in the buffer queue and data processing waiting time.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for dynamically configuring buffer queue thresholds in a wideband code division multiple access system, and a method and device for flow control. Background technique [0002] The R5 version (R5, Release 5) of the Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) system proposes a high-speed downlink packet access (HSDPA, HighSpeed ​​Downlink Packet Access) technology, thus realizing packet data in the channel The sharing of codes and transmission power improves the throughput of the downlink. The key technologies of HSDPA include Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding), Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request) and fast scheduling technology. Among them, the fast scheduling technology splits a high-speed media access control (MAC-hs, Medium Access Control-High ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the fixed cache queue threshold cannot reflect the data output rate of the cache queue. For example, when the MAC-hs cache queue threshold is set low and the data output rate of the cache queue is large, The data in the buffer queue may be emptied, thereby affecting the throughput rate of the air interface; when the MAC-hs buffer queue threshold is set high and the data output rate of the buffer queue is low, then the data in the buffer queue may accumulate, resulting in the inability to receive new data, resulting in an increase in packet loss rate and multiple retransmissions of data and a decrease in the effective throughput rate of the link between Node B and RNC

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