Method and system for determining and optimizing throughput of short range wireless network

A system for determining a throughput of a short range wireless network, comprising:

• a time parameter acquisition unit comprising a hardware processor, configured to acquire respective time parameters in a contention access period based on information transmission characteristics of the short range wireless network, wherein the respective time parameters are determined based on a non-persistent Carrier Sense Multiple Access (CSMA) mechanism;
• a unit for determining network throughput comprising a hardware processor, configured to utilize the respective time parameters in the contention access period to determine the throughput of the short range wireless network;
• a unit for calculating an average collision times in the investigation cycle comprising a hardware processor, configured to determine a probability of collision of a current transmission after a success of a last transmission and a probability of collision of the current transmission after a collision of the last transmission and determine the average collision times in the investigation cycle with the said two calculated probabilities of collision of the current transmission;
• wherein the unit for determining the network throughput comprises:
• an investigation cycle determination unit, configured to determine a duration of an investigation cycle based on an average collision times in the investigation cycle and the respective time parameters, and
• a network throughput calculating unit, configured to determine a proportion of a length of payload to the duration of the investigation cycle, wherein the proportion is the network throughput.

A system for optimizing a throughput of a short range wireless network, comprising:

• a time parameter acquisition unit comprising a hardware processor, configured to acquire respective time parameters in a contention access period based on information transmission characteristics of the short range wireless network, wherein the respective time parameters are determined based on a non-persistent Carrier Sense Multiple Access (CSMA) mechanism;
• a unit for determining the number of network devices comprising a hardware processor, configured to determine a probability of a successful clear channel assessment (CCA) for the network based on the respective time parameters in the contention access period and determine the number of network devices in the network based on the probability of the successful CCA;
• and
• a network optimizing unit comprising a hardware processor, configured to optimize the network based on the number of the network devices so as to optimize the network throughput;
• wherein the unit for determining the number of the network devices comprises:
• a unit for calculating the probability of the successful CCA configured to calculate the probability of the successful CCA based on average collision times in an investigation cycle and the respective time parameters, wherein the average collision times in the investigation cycle is the proportion of a probability of collision of a current transmission after a success of a last transmission to a probability of success of the current transmission after a collision of the last transmission;
• and these said two probabilities are both determined based on the conditional probability of a first CCA given a backoff state of the device;
• and
• a unit for calculating the number of the network devices based on the probability the successful CCA.

One or more non-transitory computer readable mediums, comprising a logic encoded in the at least one computer readable medium, the logic when executed operable to implement the method comprising:

• acquiring respective time parameters in a contention access period based on information transmission characteristics of the short range wireless network, wherein the respective time parameters are determined based on a non-persistent Carrier Sense Multiple Access (CSMA) mechanism;
• and
• determining the throughput of the short range wireless network based on the respective time parameters in the contention access period;
• wherein determining the throughput of the short range wireless network comprises:
• determining a duration of an investigation cycle in the network based on the respective time parameters in the contention access period and average collision times in an investigation cycle, and
• determining the throughput of the short range wireless network based on a payload and the duration of the investigation cycle;
• wherein the average collision times are determined based on:
• a probability of collision of a current transmission after a success of a last transmission, and
• a probability of collision of the current transmission or a success of the current transmission after a collision of the last transmission, and
• wherein the probability of collision of the current transmission and the success of the current transmission are both determined based on a conditional probability of a first clear channel assessment (CCA) given that a device is in a backoff state.