Flow control method of Iub port

Abstract

The invention discloses a flow control method of an Iub port. The method comprises the following steps: judging whether a period timer is expired or not by each subframe; if the period timer is expired, carrying out the flow control of the Iub port by adopting a periodic timed triggering mode; and otherwise, carrying out the flow control of the Iub port by adopting a specific event triggering mode. By adopting the method disclosed by the invention, the transmission capability of an empty port can be adapted.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a flow control method of an Iub port. Background technique [0002] With the evolution of mobile communication technology from High Speed ​​Downlink Packet Access (HSDPA) technology to High Speed ​​Packet Access Plus (HSPA+) technology, data scheduling in HSPA+ technology is still performed on the base station (Node B) side, from the radio network controller (RNC ) sent by the MAC-d PDU (MAC-d Protocol Data Unit) needs to be buffered on the Node B side, waiting for the scheduling of the MAC-ehs entity in the Node B, where it should be noted that the MAC-d entity is dedicated to the transmission The medium access control (MAC) entity of the channel, the MAC-d entity is located in the RNC, the MAC-ehs entity is the MAC entity for processing the high-speed downlink shared channel, and the MAC-ehs entity is located in the Node B. Due to the complexity of the air interface and the...

AI Technical Summary

Problems solved by technology

[0016] The invention patent with the application number 200810101764.4 proposes to implement adaptive flow control according to the flow control requirements of the business. The disadvantages are: 1. The high threshold and low threshold of the data cache in the business queue are set according to the business contract, but the actual air interface transmission capacity is not considered. Poor anti-jitter; 2. Flow control commands (capacity allocation control frames) will be sent if the cached data volume of the business queue is higher than the high threshold or lower than the low threshold. The flow control commands are sent frequently, and the system processing burden is high

[0017] The simple solution to the Iub port flow control proposed by the invention patent with the application number 200610089213.1 has the following disadvantages: 1. The response speed of the periodic timing mechanism is too slow, especially in the mobile scene where the air interface channel environment changes quickly and the flow control response is not timely Thus affecting scheduling performance; 2. There is no upper limit on the amount of buffered data in the business queue, and there is no protection against buffer overflow

[0018] The disadvantages of the invention patent with application number 200610084695.1 are: 1. The buffer threshold only considers the maximum transmission capacity of the air interface or is set to a fixed value, which cannot adapt to changes in the air interface channel environment and has poor anti-jitter performance; The flow control trigger mechanism based on the relationship between the size of the buffer threshold and the flag bit is too simple. The flow control command only sends data or does not send data alternately, and the rate of the Iub port cannot be flexibly adjusted according to the transmission capacity of the air interface.

[0019] To sum up, the Iub port flow control method in the prior art does not consider the criterion of making the data rate of the Iub port match the data rate of the air interface, that is to say, the Iub port flow control method in the prior art is difficult to adapt to the air interface transmission capacity

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