Patent ID: 8098754

Claim:
A method of communicating with a mobile terminal from a network element of a mobile radio network, the network element including a first antenna and a second antenna, the method comprising: a) receiving a request from the mobile terminal for a downlink channel; b) selecting at least one first training sequence from a set of training sequences for allocation to the first antenna; preparing at least one data payload; generating a first signal including the prepared at least one data payload and the at least one training sequence; transmitting the first signal in a MIMO timeslot forming the downlink channel from the first antenna of the network element to the mobile terminal; and in response to the request from the mobile terminal, selecting at least one second training sequence from the set of training sequences for allocation to the second antenna, wherein each of the selected training sequences of the at least one second training sequence is different from each of the selected training sequences of the at least one first straining sequence, preparing at least one second data payload, generating a second signal including the prepared at least one second data payload and the at least one second training sequence, transmitting to the mobile terminal the second signal in the MIMO timeslot from the second antenna of the network element simultaneously with the transmission of the first signal in the MIMO timeslot, and transmitting to the mobile terminal an indication of the selected second training sequence and the allocation to the second antenna; c) for corresponding MIMO timeslots in a same position in subsequent frames to that of the MIMO timeslot using each of the at least one first training sequence only for transmissions from the first antenna of the network element, and using each of the at least one second training sequence only for transmissions from the second antenna of the network element.