Method of increasing data throughput of a wireless network system by dynamically adjusting MTU/fragmentation size according to current transmission status

Abstract

In a wireless network system which adopts a multi-layer data transmission structure, a wireless channel is established between a user equipment and a base station. A wireless transmission channel is established between the user equipment and the base station. An MTU/fragmentation size adopted in the wireless transmission channel is set and dynamically adjusted according to the current transmission status of the wireless transmission channel.

What is claimed is: 
     
       1. A method of data transmission between a user equipment and a base station in a wireless network system having a multi-layer structure, comprising:
 establishing a wireless transmission channel between the user equipment and the base station; 
 measuring a transmission status of the wireless transmission channel by measuring a packet loss rate or a packet error rate of a first layer in the wireless transmission channel; 
 setting a data transmission parameter of a second layer in the wireless transmission channel according to the transmission status; and 
 setting a maximum transfer unit (MTU)/fragmentation size adopted in the wireless transmission channel according to the transmission status, wherein:
 when the transmission status measured at a specific time point is worse than a threshold, the MTU/fragmentation size and the data transmission parameter are set so as to allow the user equipment to operate at a first speed; 
 when the transmission status measured at the specific time point is not worse than a threshold, the MTU/fragmentation size and the data transmission parameter are set so as to allow the user equipment to operate at a second speed; 
 the first speed is smaller than a current speed of the user equipment at the specific time point; 
 the second speed is larger than the current speed; and 
 the first layer is hierarchically higher than the second layer in the multi-layer structure. 
 
 
     
     
       2. The method of  claim 1 , wherein setting the MTU/fragmentation size according to the transmission status comprises:
 adjusting the MTU/fragmentation size from a first value at the specific time point to a second value smaller than the first value when the transmission status measured at the specific time point is worse than the threshold; and 
 maintaining the MTU/fragmentation size at the first value when the transmission status measured at the specific time point is not worse than the threshold. 
 
     
     
       3. The method of  claim 1 , wherein setting the MTU/fragmentation size according to the transmission status comprises:
 adjusting the MTU/fragmentation size from a first value acquired at the specific time point to a second value smaller than the first value when the transmission status measured at the specific time point is worse than the threshold; and 
 adjusting the MTU/fragmentation size from the first value to a third value larger than the first value when the transmission status measured at the specific time point is not worse than the threshold. 
 
     
     
       4. The method of  claim 3 , wherein:
 the second value is equal to an average of the first value and a minimum value; 
 the third value is equal to an average of the first value and a maximum value; 
 the maximum value is larger than the first value, the second value and the third value; and 
 the minimum value is smaller than the first value, the second value and the third value. 
 
     
     
       5. The method of  claim 1 , further comprising:
 acquiring a current value of the MTU/fragmentation size at the specific time; 
 acquiring an updated value which is smaller the current value; 
 setting the MTU/fragmentation size to the updated value when the transmission status measured at the specific time point is worse than the threshold and the updated value exceeds a minimum value; and 
 setting the MTU/fragmentation size to the minimum value when the transmission status measured at the specific time point is not worse than the threshold and the updated value does not exceed the minimum value.