Abstract: Methods of providing power overload control in a communication system having a least one base station serving one or more users of at least one cell are described which may avoid an overload condition in the system. In one aspect, a target signal-to-interference ratio (SIRtarget) may be controlled for inner loop power control implemented by the base station, so as to maintain the loading of the communication system below an overload condition. In another aspect, a target block error rate (BLERtarget) may be controlled for outer loop power control implemented by the base station, so as to maintain the loading of communication system below an overload condition.

Abstract: The present invention provides a method and an apparatus for responding to changes in measurement of a system load in a spread spectrum communication system. Using a load control algorithm, for example, the spread spectrum communication system may handle sudden changes or variations, such as spikes or steps in system load measurements for an uplink and/or a downlink between a mobile unit and an access network. The load control algorithm determines whether a sudden variation of a measured system load is generated by a source not under a power control or is caused by a variation of a spread spectrum communication system load. A load control measure may be selectively applied to adjust one or more parameters associated with the system load.

Abstract: A method and apparatus are disclosed whereby noise is introduced at one or more base stations in non-HSDPA cells into the uplink signal from one or more user devices. As a result, the apparent quality of the uplink channel in those cells will appear to be lower than the actual quality of that channel. The power control commands issued from the base station to the user device will, therefore, reflect this lower estimated channel quality and, as a result, the user device will follow power control commands from the base station in the HSDPA cell. Therefore, the transmit power of the user device will remain adequate to communicate with the base station in the HSDPA cell and, as a result, the UL and DL in the HSDPA cell will remain synchronized.

Abstract: A technique is disclosed for determining values of different portions of a total uplink interference, which can be used for scheduling and load control at a base station, for example. A disclosed example includes obtaining measurements from individual users and using those measurements to determine corresponding portions of a total uplink interference at the base station. One portion is associated with users that are controlled by a scheduler for that base station. Another portion is associated with users that are not controlled by that scheduler. Determining each of the portions individually and using a received total wideband power measurement allows for determining each of the major portions of the total uplink interference at a base station.

Abstract: The present invention provides a method for reporting load measurements. The method may include providing information indicative of a first load associated with at least one first channel type to a first scheduling unit. The first load represents a difference between a second load associated with at least one second channel type and a third load.

Abstract: In one embodiment, a target scheduling grant for a user is generated based on the uplink resource consumed by a plurality of users, and a scheduling grant for a user is generated based on the target scheduling grant and the uplink resource consumed by the user. More specifically, in one embodiment, a scheduling grant is generated for the user based on the target scheduling grant, the uplink resource consumed by the user, and a reference scheduling grant.

Abstract: The present invention provides a method of wireless communication involving at least one mobile unit and at least one base station configured to transmit data over first and second data channels and corresponding first and second control channels. The method includes accessing control information associated with data to be transmitted over the first data channel and mapping the control information to a portion of the second control channel.

Abstract: The invention relates to packet transmission scheduling and specifically to UMTS packet transmission scheduling. It is an object of the invention to provide an improved method for packet transmission scheduling, especially on downlink shared channels and an improved packet transmission scheduling system, both the improved method and the system especially adapted to be used for UMTS systems. The invention proposes a quality of service scheduling of multiple data flows in a CDMA system, wherein a priority order of protocol data units (PDU) of multiple data flows with regard to predefined flow's quality of service requirements is determined and a serving of the protocol data units (PDU) is performed by dynamically creating transport block sets (TBS) to be transmitted to the physical layer (PHY-layer) with regard to the defined priority order and in dependence of allocated radio resource constraints.

Abstract: Disclosed is a method and system thereof for transmitting a Voice over Internet Protocol (VoIP) packet over a primary channel and a supplemental channel belonging to a shared pool of supplemental channels in a wireless communications network such that Orthogonal Variable Spreading Factor (OVSF) codes associated with higher spreading factors (SF) may be used, thereby minimizing the adverse effects on system resources associated with implementing VoIP over downlink Dedicated CHannels (DCH). In the method and system, if an entire VoIP packet cannot be transmitted over a single transmission time interval on a primary channel, a specific supplemental channel (or code associated therewith) is assigned to a User Equipment (UE) to which the VoIP packet is intended. A portion of the VoIP packet is transmitted to the UE over a Dedicated Physical Data CHannel (DPDCH) on the primary channel, and another portion of the VoIP packet is transmitted to the UE over a DPDCH on the supplemental channel.

Abstract: Disclosed is a method and system for performing handoffs in a wireless communications network which incorporates Voice over Internet Protocol (VoIP) using shared supplemental spreading codes. In this method and system, a mobile station is assigned a first and second primary code and a first and second set of supplemental codes. The first primary and set of supplemental codes are associated with a first base station. The second primary and set of supplemental codes are associated with a second base station and assigned to the mobile station when the mobile station is entering into a handoff state. The first and second set of supplemental codes belong to a pool of shared supplemental codes associated with the first and second base stations, respectively. A specific supplemental code is assigned from each of the first and second sets of supplemental codes when a complete packet cannot be transmitted over a single transmission time interval on the first and second primary channels.

Abstract: An improved method for packet transmission scheduling and an improved packet transmission scheduling system in mobile telecommunication systems. Both the improved method and the system especially adapted to be used for UMTS systems.

Abstract: A new and significantly improved approach for controlling the transmission power in the uplink direction of a CDMA-based radio system is disclosed, which provides a transmission power control even with regard to an overall link quality substantially involving a real time reaction on changes in the environment. A CDMA-based radio system is described which comprises an inner power control loop for adjusting the transmission power between a user equipment and at least one base station based on the signal to interference ratio to ensure that the signal to interference ratio is similar to a target signal to interference ratio at least within a predefined range and an outer power control loop for adjusting the target signal to interference ratio based on the link quality to ensure a target link quality necessary for fulfilling a predetermined quality of service in view of link quality at least within a predefined range.

Abstract: The present invention provides a method and an apparatus for responding to changes in measurement of a system load in a spread spectrum communication system. Using a load control algorithm, for example, the spread spectrum communication system may handle sudden changes or variations, such as spikes or steps in system load measurements for an uplink and/or a downlink between a mobile unit and an access network. The load control algorithm determines whether a sudden variation of a measured system load is generated by a source not under a power control or is caused by a variation of a spread spectrum communication system load. A load control measure may be selectively applied to adjust one or more parameters associated with the system load.

Abstract: A method for scheduling uplink data transmission by user equipment (UE) in a wireless communication network is provided. The method may comprise scheduling data transmission by the user equipment in response to physical layer signaling received from the user equipment.

Abstract: Disclosed is a method related to the controlling of quality of services of a CDMA-based-System. It is provides an improved control mechanism for the quality of services in a CDMA-System, in particular by providing a controlling means apt to assign the target signal to interference ratio, the static rate matching factor and the power-offset dynamically, especially adapted to be used for UMTS-Systems.

Abstract: QoS scheduling is used for handling multiple data flows in packet switched cellular systems, especially in a packet switched mobile telecommunication system, wherein the scheduling mechanism of a specific cell is coupled with the scheduling mechanism of at least one second cell, in particular by transferring data between the specific cell and at least one second cell comprising a status information concerning data flow within the specific cell.

Abstract: The present invention provides a method and an apparatus for assigning a channel in response to a request for service for a mobile station in a wireless communication network serving a plurality of regions, such as cells in a digital cellular network. The mobile station may be located in one of the plurality of regions. The method comprises determining a first indication of congestion on a forward access channel and a second indication of congestion on a random access channel and assigning at least one channel of a plurality of channels to the mobile station based on the determined first and second indications of congestion. Based on the first indication of congestion, a first threshold may be adjusted for the forward access channel and a second threshold may be adjusted based on the second indication of congestion on the random access channel.

Abstract: The present invention provides a method and an apparatus for balancing traffic load between a plurality of users on one or more shared wireless channels, e.g., from a communication node associated with a network of a plurality of cells including a first and a second cell. The method comprises determining a first indication of traffic load for a first cell and a second indication of traffic load for a second cell on the one or more shared wireless channels and redistributing the traffic load on the one or more shared wireless channels associated with the first cell and the second cell based on the first indication of traffic load for the first cell and the second indication of traffic load for the second cell. A scheduler, e.g., at a Node B and a decision algorithm at a controller, e.g.

Abstract: There is disclosed a method of allocating a channelisation code comprising, for each user, defining a path in the code tree based on a required range of spreading factors, selecting a node of the path in dependence on the currently required spreading factor; and reserving all nodes on the code tree in an upward and downward direction from the selected node, wherein the selected node for any user must not coincide with a node reserved by any other user.

Abstract: In a method of scheduling, one or more additional users of a group may be selected, to be simultaneously scheduled with a first user of the group that has already been scheduled. The selection of the one or more users may be made based on spatial information of the users in the group.