A method for improving transmission efficiency of physical layer attributes in a wireless communication system, comprising the following steps of: (a) defining one or more sets of physical layer channel basic attributes, wherein the physical layer channel basic attributes refer to the attributes that must be supported by the physical layer channel, and each set being respectively represented by a value of Profile; (b) a transmitting apparatus sending a physical layer channel description message in which the value of Profile is used to represent the physical layer channel basic attributes supported by the transmitting apparatus; (c) after receiving said channel description message, based on the value of Profile within the message, a receiving apparatus acquiring a set of physical layer channel basic attributes supported by the transmitting apparatus; the method further comprising: in step (a), defining default values of physical layer channel attribute parameters, and defining a combination of physical layer channel attribute parameters whose actual values are different from the default values, and each type of combination being represented by a value of ParameterClass domain; in step (b), if there exist physical layer channel attribute parameters whose actual values are different from the default values, said transmitting apparatus using the value of ParameterClass domain to represent the physical layer channel attribute parameters whose actual values are different from the default values in said channel description message, and behind the ParameterClass domain, the actual values of these physical layer channel attribute parameters being written into a Value domain according to a pre-determined order; in step (c), based on values of said ParameterClass and Value domains, the receiving apparatus acquiring the physical layer channel attribute parameters supported by said transmitting apparatus whose actual values are different from the default values and the actual values thereof. (a) defining one or more sets of physical layer channel basic attributes, wherein the physical layer channel basic attributes refer to the attributes that must be supported by the physical layer channel, and each set being respectively represented by a value of Profile; (b) a transmitting apparatus sending a physical layer channel description message in which the value of Profile is used to represent the physical layer channel basic attributes supported by the transmitting apparatus; (c) after receiving said channel description message, based on the value of Profile within the message, a receiving apparatus acquiring a set of physical layer channel basic attributes supported by the transmitting apparatus; in step (a), defining default values of physical layer channel attribute parameters, and defining a combination of physical layer channel attribute parameters whose actual values are different from the default values, and each type of combination being represented by a value of ParameterClass domain; in step (b), if there exist physical layer channel attribute parameters whose actual values are different from the default values, said transmitting apparatus using the value of ParameterClass domain to represent the physical layer channel attribute parameters whose actual values are different from the default values in said channel description message, and behind the ParameterClass domain, the actual values of these physical layer channel attribute parameters being written into a Value domain according to a pre-determined order; in step (c), based on values of said ParameterClass and Value domains, the receiving apparatus acquiring the physical layer channel attribute parameters supported by said transmitting apparatus whose actual values are different from the default values and the actual values thereof.