Abstract: 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 (42, 46) implementing the disclosed algorithm for a generic cell (24, 30) is provided. The cell downlink scheduler (42, 46) is used in the cellular communications network (22) to enable downlink CoMP scheduling within a cell cluster (36) including the cell (24, 30) and one or more other cells (24, 30). According to at least some embodiments, the distributed downlink CoMP scheduling for the cell cluster (36) effectively reduces inter-cell co-channel interference.

Abstract: 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 (42, 46) implementing the disclosed algorithm for a generic cell (24, 30) is provided. The cell downlink scheduler (42, 46) is used in the cellular communications network (22) to enable downlink CoMP scheduling within a cell cluster (36) including the cell (24, 30) and one or more other cells (24, 30). According to at least some embodiments, the distributed downlink CoMP scheduling for the cell cluster (36) effectively reduces inter-cell co-channel interference.

Abstract: A method for generating at least one downlink CoMP cooperating set for downlink CoMP processing at a first node of a plurality of nodes in a network is provided. Each of the plurality of nodes managing at least one cell. A plurality of multi-dimensional UE points is determined. Each dimension of a respective multi-dimensional UE point corresponds to a channel quality metric value associated with a downlink signal received by the UE from a corresponding cell. At least one k-dimensional UE constellation is determined. Each k-dimensional UE constellation includes a set of UEs receiving downlink signals from k cells. At least one k-dimensional UE group is determined based on the determined at least one k-dimensional UE constellation. Each k-dimensional UE group is associated with the same cells. At least one downlink CoMP coordinating set is generated based on the plurality of k-dimensional UE groups.

Abstract: 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.

Abstract: A wireless receiver receives reference signals over a wireless link. The wireless receiver calculates a selection indication based on the received reference signals, and the wireless receiver selects from among plural channel estimation techniques based on the selection indication, where the selected channel estimation technique is usable to perform channel estimation of the wireless link.

Abstract: A method for generating at least one downlink CoMP cooperating set for downlink CoMP processing at a first node of a plurality of nodes in a network is provided. Each of the plurality of nodes managing at least one cell. A plurality of multi-dimensional UE points is determined. Each dimension of a respective multi-dimensional UE point corresponds to a channel quality metric value associated with a downlink signal received by the UE from a corresponding cell. At least one k-dimensional UE constellation is determined. Each k-dimensional UE constellation includes a set of UEs receiving downlink signals from k cells. At least one k-dimensional UE group is determined based on the determined at least one k-dimensional UE constellation. Each k-dimensional UE group is associated with the same cells. At least one downlink CoMP coordinating set is generated based on the plurality of k-dimensional UE groups.

Abstract: A system and method of cancelling downlink inter-channel interference between a first selected UE in one sector of a cell and a second selected UE in a second sector of said cell by using intra-eNB DL CoMP is described. UEs which are affected by ICI are identified in sectors which are adjacent to each other in the cell. A downlink CoMP operational set is formed for the identified UEs. Channel matrix blocks are estimated for the first and second selected UEs. The channel matrix blocks are representations of the channel characteristics between the first and second UE, in their respective sectors and the serving base station. The estimated channel matrix blocks are then loaded into a cross-sector channel block matrix. The inverse values of the channel matrix blocks are then calculated to form a sector specific cross-sector pre-coding matrix which is used to enable interference cancellation.

Abstract: A radio user equipment (UE) mobility status is determined in a communications node. UE mobility status measurements associated with the UE communicating over a radio channel are performed. The UE mobility status corresponds to a degree of variation of the radio channel over time. Channel characteristics of the radio channel at a first time and at a second later time are determined. Based on the determined channel characteristics, a channel characteristic error metric is determined and compared to a predetermined threshold. The UE mobility status is determined based on one or more iterations of the threshold comparison.

Abstract: 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.

Abstract: A system and method of cancelling downlink inter-channel interference between a first selected UE in one sector of a cell and a second selected UE in a second sector of said cell by using intra-eNB DL CoMP is described. UEs which are affected by ICI are identified in sectors which are adjacent to each other in the cell. A downlink CoMP operational set is formed for the identified UEs. Channel matrix blocks are estimated for the first and second selected UEs. The channel matrix blocks are representations of the channel characteristics between the first and second UE, in their respective sectors and the serving base station. The estimated channel matrix blocks are then loaded into a cross-sector channel block matrix. The inverse values of the channel matrix blocks are then calculated to form a sector specific cross-sector pre-coding matrix which is used to enable interference cancellation.

Abstract: A wireless receiver receives reference signals over a wireless link The wireless receiver calculates a selection indication based on the received reference signals, and the wireless receiver selects from among plural channel estimation techniques based on the selection indication, where the selected channel estimation technique is usable to perform channel estimation of the wireless link.

Abstract: A wireless receiver receives reference signals over a wireless link. The wireless receiver calculates a selection indication based on the received reference signals, and the wireless receiver selects from among plural channel estimation techniques based on the selection indication, where the selected channel estimation technique is usable to perform channel estimation of the wireless link.

Abstract: A radio user equipment (UE) mobility status is determined in a communications node. UE mobility status measurements associated with the UE communicating over a radio channel are performed. The UE mobility status corresponds to a degree of variation of the radio channel over time. Channel characteristics of the radio channel at a first time and at a second later time are determined. Based on the determined channel characteristics, a channel characteristic error metric is determined and compared to a predetermined threshold. The UE mobility status is determined based on one or more iterations of the threshold comparison.

Abstract: Provided is an IP QoS management mechanism for modern wireless networks to guarantee delivery of IP services with the required quality through the networks to customers. A layered QoS management architecture is provided which performs the QoS control over the entire communication protocol stack of a wireless network. The architecture consists of two levels of IP QoS management with an adaptation interface between them. These different functional and adapting levels are called from top to bottom, Upper Layer QoS Management (ULQM), IP QoS adaptation (IQA), and Lower Layer QoS Management (LLQM).

Abstract: The invention provides a signal power control method and apparatus for a wireless system to control the power level of a received signal transmitted over a radio link so as to counteract transmission impairments caused by environment variations and maintain the reliability of the radio link. The signal power control of this invention serves to control the transmit power used for transmission and adjust the position of the receiver dynamic range so that the received signal can always be optimally received. In a preferred embodiment, the invention is incorporated in a broadband wireless access (BWA) time division multiplex access (TDMA) system to maintain the reliability of an upstream radio link connecting a base transceiver station (BTS) with multiple customer premises equipment (CPE) units.