초록 ▼

The invention relates to a method and to an arrangement for effecting base orthogonal channel hopping between mobile stations (MS1-MS3) and a base station in a radio communications system. Connections (F1-F3) having low attenuation are allotted a number of channels having high interference I (channe

The invention relates to a method and to an arrangement for effecting base orthogonal channel hopping between mobile stations (MS1-MS3) and a base station in a radio communications system. Connections (F1-F3) having low attenuation are allotted a number of channels having high interference I (channel, t). Connections (F1-F3) that have higher attenuation are allocated a number of channels that have lower interference I (channel, t). A channel allocation means (211) in the base station functions to produce channel hopsequences which are transferred to hopsequence lists (204-206) in the mobile stations (MS1-MS3), via a control channel SACCH. The channel hopsequences are also transferred to corresponding hopsequence lists (201-203) in the base station. Attenuation of the connections (F1-F3) and interference on the channels I (channel, t) are measured continuously in the channel allocating means (211), wherein the best channels with respect to interference are used. The channel allocation means creates the channel hop sequences in accordance with the principle that the better a connection with respect to attenuation, the poorer the channels with respect to interference that are allocated to the connection.

대표청구항 ▼

[ We claim:] [1.] A method of channel hopping in a radio communications systems wherein channel hopping is effected between channels for connections between a base station and at least one mobile station in the radio communications system, and wherein the connections are subjected to signal attenuat

[ We claim:] [1.] A method of channel hopping in a radio communications systems wherein channel hopping is effected between channels for connections between a base station and at least one mobile station in the radio communications system, and wherein the connections are subjected to signal attenuation and interference, said method comprising the steps of:generating a signal attenuation parameter for the respective connections, wherein said signal attenuation parameter corresponds to the extent by which a desired signal has been attenuated when it is transmitted from a transmitter until it is received by a receiver;generating a channel quality parameter for the respective channels;generating at least one channel hop sequence for the respective connections, wherein a channel hop sequence includes a number of channels between which the connection hops, and wherein a channel hop sequence is generated in accordance with the signal attenuation parameter of the connections and the channel quality parameter of said channels, wherein the better a connection is with regard to the signal attenuation parameter, the poorer the channels will be with regard to the channel quality parameter in the channel hop sequence for that connection;allocating the channel to a respective hop sequence list in the base station and in the mobile stations; andchannel hopping between the channels in the channel that have been allocated to the hop sequence lists when communicating by radio on the connections between the base station and the mobile stations.