Maximum transmission unit size selection for wireless data transfer

Abstract

The described technology is generally directed towards selecting, by user equipment, a selected maximum transmission unit (MTU) packet size for wireless data transfer based on radio signal conditions. In one aspect, reference signal received power (RSRP) and reference signal received quality (RSRQ) are used to select the MTU packet size, e.g., by using RSRP and RSRQ as indices to a lookup table of predetermined MTU packet sizes, such as previously determined by field testing. In general, smaller MTU packet sizes are used with poorer quality radio signal conditions. The selected MTU packet size may be increased or decreased based on actual performance data and/or based on changed radio signal conditions, such as for a subsequent data transfer session. The user equipment may comprise a Cat-M device that transfers data related to Machine-Type Communications (MTC)/Machine to Machine (M2M) communications.

What is claimed is: 
     
         1 . A method, comprising:
 populating, by a user equipment comprising a processor, a data store of defined limit transmission unit packet sizes, comprising selecting the defined limit transmission unit packet sizes for inclusion in the data store based on determining transmission control protocol IP packet retransmission rates and determining transmission control protocol session time out rates at a cell edge, as a function of respective received powers and respective received qualities, for respective reference signals corresponding to a group of candidate defined limit transmission unit packet sizes; and   employing, by the user equipment, an initial defined limit transmission unit packet size selected from the defined limit transmission unit packet sizes included in the data store based on a condition of a radio signal as a selected defined limit transmission unit packet size to transfer data between the user equipment and a network device.   
     
     
         2 . The method of  claim 1 , wherein the condition of the radio signal comprises a power of a reference signal associated with the radio signal. 
     
     
         3 . The method of  claim 1 , wherein the condition of the radio signal comprises a received quality of a reference signal associated with the radio signal. 
     
     
         4 . The method of  claim 1 , further comprising determining, by the user equipment, that a negative acknowledgement count applicable to packet transmissions is below a threshold value, and, in response to the determining that the negative acknowledgement count is below the threshold value, increasing the selected defined limit transmission unit packet size to an increased defined limit transmission unit packet size, and using the increased defined limit transmission unit packet size to transfer data between the user equipment and the network device in a subsequent data transfer session subsequent to the increasing. 
     
     
         5 . The method of  claim 1 , further comprising determining, by the user equipment, that a negative acknowledgement count applicable to packet transmissions is above a threshold value, and, in response to the determining that the negative acknowledgement count is above the threshold value, decreasing the selected defined limit transmission unit packet size to a decreased defined limit transmission unit packet size, and using the decreased defined limit transmission unit packet size to transfer data between the user equipment and the network device in a subsequent data transfer session subsequent to the decreasing. 
     
     
         6 . The method of  claim 1 , further comprising changing, by the user equipment, the selected defined limit transmission unit packet size for a subsequent transfer of data, subsequent to the changing, between the user equipment and the network device based on actual performance measurement data with respect to the transfer of the data between the user equipment and the network device. 
     
     
         7 . The method of  claim 1 , wherein the user equipment is a category-M device. 
     
     
         8 . A mobile device, comprising:
 a processor; and   a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, the operations comprising:
 populating a data store with threshold transmission unit packet sizes, comprising selecting the threshold transmission unit packet sizes for inclusion in the data store based on determining transmission control protocol IP packet retransmission rates and determining transmission control protocol session time out rates at a cell edge, as a function of respective received powers and respective received qualities, for respective reference signals of a group of candidate threshold transmission unit packet sizes; and 
 employing an initial threshold transmission unit packet size selected from the data store based on a condition of a radio signal as a selected threshold transmission unit packet size to transfer data in a data transfer session between the mobile device and a network device. 
   
     
     
         9 . The mobile device of  claim 8 , wherein the condition of the radio signal comprises a power of a reference signal associated with the radio signal. 
     
     
         10 . The mobile device of  claim 8 , wherein the condition of the radio signal comprises a received quality of a reference signal associated with the radio signal. 
     
     
         11 . The mobile device of  claim 8 , wherein the operations further comprise determining that a negative acknowledgement count applicable to packet transmissions is below a threshold value, and, in response to the determining that the negative acknowledgement count is below the threshold value, increasing the selected threshold transmission unit packet size to an increased threshold transmission unit packet size, and using the increased threshold transmission unit packet size to transfer data between the mobile device and the network device in a subsequent data transfer session subsequent to the data transfer session. 
     
     
         12 . The mobile device of  claim 8 , wherein the operations further comprise determining that a negative acknowledgement count applicable to packet transmissions is above a threshold value, and, in response to the determining that the negative acknowledgement count is above the threshold value, decreasing the selected threshold transmission unit packet size to a decreased threshold transmission unit packet size, and using the decreased threshold transmission unit packet size to transfer data between the mobile device and the network device in a subsequent data transfer session subsequent to the data transfer session. 
     
     
         13 . The mobile device of  claim 8 , wherein the operations further comprise changing the selected threshold transmission unit packet size for a subsequent transfer of data, subsequent to the data transfer session, between the mobile device and the network device based on actual performance measurement data with respect to the transfer of the data between the mobile device and the network device. 
     
     
         14 . The mobile device of  claim 8 , wherein the mobile device is a category-M device. 
     
     
         15 . A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor of a user equipment, facilitate performance of operations, the operations comprising:
 populating a data store of predetermined defined limit transmission unit packet sizes, comprising selecting defined limit transmission unit packet sizes for inclusion in the data store based on determining transmission control protocol IP packet retransmission rates and determining transmission control protocol session time out rates at a cell edge, as a function of respective received powers and respective received qualities, for respective reference signals of a group of candidate defined limit transmission unit packet sizes; and   employing an initial defined limit transmission unit packet size selected from the data store based on a condition of a radio signal as a selected defined limit transmission unit packet size to transfer data between the user equipment and network equipment.   
     
     
         16 . The non-transitory machine-readable medium of  claim 15 , wherein the condition of the radio signal comprises a power of a reference signal associated with the radio signal. 
     
     
         17 . The non-transitory machine-readable medium of  claim 15 , wherein the condition of the radio signal comprises a received quality of a reference signal associated with the radio signal. 
     
     
         18 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise determining that a negative acknowledgement count applicable to packet transmissions is below a threshold value, and, in response to the determining that the negative acknowledgement count is below the threshold value, increasing the selected defined limit transmission unit packet size to an increased defined limit transmission unit packet size, and using the increased defined limit transmission unit packet size to transfer data between the user equipment and the network equipment in a subsequent data transfer session after the transfer of the data between the user equipment and network equipment. 
     
     
         19 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise determining that a negative acknowledgement count applicable to packet transmissions is above a threshold value, and, in response to the determining that the negative acknowledgement count is above the threshold value, decreasing the selected defined limit transmission unit packet size to a decreased defined limit transmission unit packet size, and using the decreased defined limit transmission unit packet size to transfer data between the user equipment and the network equipment in a subsequent data transfer session after the transfer of the data between the user equipment and network equipment. 
     
     
         20 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise changing the selected defined limit transmission unit packet size for a subsequent transfer of data between the user equipment and the network equipment based on actual performance measurement data with respect to the transfer of the data between the user equipment and the network equipment.