System and method for link adaptation for variable link conditions

摘要

Systems, apparatus, methods, and manufactures for performing link adaptation in a communications system are described. The methods may employ an error rate table that has a channel condition value dimension and a transmission parameter dimension. The elements of the error rate table include expected error rates for data transmitted at various channel conditions according to various transmission parameters. Also, the various transmission parameters may each be associated with a data transmission rate. For a given channel condition value, the methods may determine expected throughputs for each of the transmission parameters according to the associated expected error rates and data transmission rates. A transmission parameter may be selected according to the expected throughputs.

主权项

1. A method of link adaptation in a communications network, comprising:
maintaining an error rate array in a storage component,
wherein the error rate array has at least a channel condition value and a transmission parameter,wherein the transmission parameter is a set of transmission parameters corresponding to data transmission capabilities of the communications network, andwherein each element of the error rate array corresponds to an error rate of a channel condition value/transmission parameter combination; selecting at least one element of the error rate array corresponding to a current condition of a communications channel; selecting an individual transmission parameter of the set of transmission parameters,
wherein the individual transmission parameter is selected based on the selected at least one element of the error rate array; and, transmitting data according to the selected individual transmission parameter.