Telefonaktiebolaget Lm Ericsson (Publ)

Xiaodong Shi

Jiandong Zhuang

Shiguang Guo

Edward Mah

A downlink Coordinated Multipoint (CoMP) scheduling algorithm used in a cellular communications network is disclosed. In some embodiments, a method of operation of a downlink scheduler () implementing the disclosed algorithm for a generic cell () is provided. The cell downlink scheduler () is used in the cellular communications network () to enable downlink CoMP scheduling within a cell cluster () including the cell () and one or more other cells (). According to at least some embodiments, the distributed downlink CoMP scheduling for the cell cluster () effectively reduces inter-cell co-channel interference.

DL CoMP scheduling for a heterogeneous cellular network

Feedback information is conveyed between a wireless device and a base station in a cellular communications network via selection and detection of radio resources utilized for an uplink reference signal transmitted from a wireless device to a base station. In this manner, additional feedback information may be sent from the wireless device to the base station without sacrificing any bandwidth available for data transfer between the wireless device and the base station. The radio resources utilized for the uplink reference signal may include cyclic shift and/or time and frequency resources. The uplink reference signal may be an uplink sounding reference signal for a long term evolution network (LTE), or its evolution, such as LTE-Advanced.

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Ottawa, Canada

Xiaodong Shi