Reverse data transmission method and apparatus in mobile communication system
AssigneeSamsung Electronics Co., Ltd.
InventorChang-Hoi Koo
Life of this patent
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Abstract
A reverse data rate controlling method in a mobile communication system for transmission of packet data is provided. In an embodiment of the present invention, an RRL (Reverse Rate Limit) message includes an ignore RAB (Reverse Activity Bit) field to ensure a predetermined data rate for a particular access terminal (AT). In another embodiment of the present invention, an access probability is set for each data rate in the RRL message. Upon receipt of an RAB, an AT compares a random number with the access probability for its data rate and increases or decreases the data rate according to the comparison result.
Claims27
A reverse data rate controlling method in a data communication system between an access network (AN) and access terminals (ATs), comprising the steps of:
- transmitting data at initial reverse data rates to the AN;
- receiving a message including ignore RAB (Reverse Activity Bit) information indicating whether the ATs should not change the reverse data rates from the AN in at least one AT;
- receiving a RAB indicating increase or decrease of the reverse data rates from the AN;
- and
- ignoring the RAB in the at least one AT received the ignore RAB information.
A reverse data rate controlling method in an access terminal (AT) in a mobile communication system, comprising the steps of:
- establishing a reverse link with initial values, receiving an RRL (Reverse Rate Limit) message on a forward link and storing a value of an ignore reverse activity bit (RAB) field included in the reverse rate limit (RRL) message;
- determining a reverse data rate by comparing a current data rate with a data rate set in the RRL message and transmitting packet data at the determined reverse data rate;
- and
- changing the reverse data rate according to the value of the ignore RAB field upon receipt of an RAB on the forward link.
A reverse data rate controlling method in an access network (AN) in a mobile communication system, comprising the steps of:
- analyzing characteristics of an access terminal (AT) or a service in an initialization state for the AT and setting a medium access control (MAC) index for the AT on a forward MAC channel;
- setting an ignore reverse activity bit (RAB) field if a predetermined data rate must be maintained according to the characteristics of an AT or a service ;
- and
- assembling an reverse rate limit (RRL) message with the ignore RAB field and transmitting the RRL message to the AT.
A reverse data rate controlling method in a plurality of access terminals (ATs) in a data communication system between an access network (AN) and the ATs, comprising the steps of:
- receiving an reverse activity bit (RAB) indicating increase or decrease of reverse data rates from the AN during transmitting data at the reverse data rates to the AN;
- comparing access probabilities corresponding to the reverse data rates with random numbers generated in the ATs;
- and
- increasing the reverse data rates for the respective ATs and determining the data rate according to the comparison result and transmitting data at the determined increased data rates.
A reverse data rate controlling method in an access terminal (AT) in a mobile communication system, comprising the steps of:
- establishing a reverse link with initial values, receiving an reverse rate limit (RRL) message on a forward link, and storing access probabilities for data rates;
- determining a reverse data rate by comparing a current data rate with a data rate set in the RRL message and transmitting packet data at the determined reverse data rate;
- and
- changing the reverse data rate according to the access probabilities based on the received data rate upon receipt of a reverse activity bit (RAB) on the forward link.
A reverse data rate controlling method in a mobile communication system for transmission of packet data, comprising the steps of:
- analyzing characteristics of an access terminal (AT) or a service in an initialization state for the AT and setting a medium access control (MAC) index for the AT on a forward MAC channel;
- generating an access probability for each data rate according to an AT type or the service characteristic;
- and
- assembling an reverse rate limit (RRL) message with the access probabilities and transmitting the RRL message to the AT.
In an access terminal (AT) apparatus for transmitting reverse packet data in a mobile communication system, a control procedure performed when transmitting the reverse packet data in the AT apparatus comprising the steps of:
- establishing a reverse link with initial values, receiving an RRL (Reverse Rate Limit) message on a forward link, analyzing an ignore reverse activity bit (RAB) field, and storing the value of the ignore RAB field;
- determining a reverse data rate by comparing a current data rate with a data rate set in the RRL message and transmitting packet data at the determined reverse data rate;
- and
- changing the reverse data rate according to the value of the ignore RAB field upon receipt of an RAB on the forward link.
In an access network (AN) apparatus for transmitting reverse packet data in a mobile communication system, a control procedure performed when transmitting the reverse packet data in the AN apparatus comprising the steps of:
- analyzing characteristics of an access terminal (AT) or a service in an initialization state for the AT and setting a medium access control (MAC) index for the AT on a forward MAC channel;
- setting an ignore reverse activity bit (RAB) field if a predetermined data rate must be maintained according to the AT or the service characteristic;
- and
- assembling an reverse rate limit (RRL) message with the ignore RAB field and transmitting the RRL message to the AT.
In an access terminal (AT) apparatus for transmitting reverse packet data in a mobile communication system, a control procedure performed when transmitting the reverse packet data in the AT apparatus comprising the steps of:
- establishing a reverse link with initial values, receiving an reverse rate limit (RRL) message on a forward link, and storing access probabilities for data rates;
- determining a reverse data rate by comparing a current data rate with a data rate set in the RRL message and transmitting packet data at the determined reverse data rate;
- and
- changing the reverse data rate according to the access probabilities upon receipt of a reverse activity bit (RAB) on the forward link.
In an access network (AN) apparatus for transmitting reverse packet data in a mobile communication system, a control procedure performed when transmitting the reverse packet data in the AN apparatus comprising the steps of:
- analyzing a type of an access terminal (AT) and characteristics of a service in an initialization state for the AT and setting a medium access control (MAC) index for the AT on a forward MAC channel;
- generating an access probability for each data rate according to the characteristics of an AT or a service;
- and
- assembling an reverse rate limit (RRL) message with the access probabilities and transmitting the RRL message to the AT.
Dependencies are inferred from the claim text.