Abstract: The invention provides a method and a device for measuring enhanced Reference Signal Received Power (eRSRP) of Channel State Information-Reference Signals (CSI-RSs) of transport points in Coordinated Multi-Point (CoMP), and a method and a device for maintaining a measurement set/cooperating set based on the measurement. A method for reporting eRSRP is provided, including: receiving CSI-RSs transmitted by multiple transport points; measuring and evaluating eRSRP of the CSI-RSs of the multiple transport points based on measurement configuration; and transmitting a measurement report about the eRSRP of the measured CSI-RS. The measurement problem of the enhanced reference signal power of the transport points in CoMP and the maintenance problem of the measurement set/cooperating set are solved, thereby greatly promoting the development and application of the CoMP technology.

Abstract: A method of balancing user equipment traffic load between at least two cells supported by a base station in a wireless telecommunication network, a computer program product and network access node operable to perform that method. The method comprising: determining that an operational parameter of at least one of the at least two cells meets criteria indicative of an overload of user equipment traffic; transmitting a link parameter which indicates that establishment of a dedicated communication link with the base station within the at least one cell is unavailable to user equipment operating within the at least one cell without an established dedicated communication link. Aspects allow for early balancing of load within an overloaded network.

Abstract: The invention proposes a method, of configuring a timing advance group for a secondary cell, in a base station, a method, of configuring a value of a time alignment timer for a secondary cell, in a base station, a method of configuring a value of a time alignment timer in a user equipment, and a method of configuring a timing advance group in a user equipment.

Abstract: The invention proposes a method, in a carrier aggregation transmission-based radio communication network, of controlling uplink transmission of a user equipment over a plurality of secondary cells in a group of secondary cells, the user equipment being configured with a group of primary cells and at least one group of secondary cells, and the group of secondary cells belonging to the at least one group of secondary cells, wherein in the event that the group of primary cells and the at least one group of secondary cells each is configured with a time alignment timer, the method comprises the steps of: terminating the uplink transmission of the user equipment over at least one activated secondary cell in the group of secondary cells when the time alignment timer of the group of primary cells expires; in the event that the group of primary cells and the at least one group of secondary cells are configured with a common time alignment timer, the method comprises the steps of: determining whether a time alignment

Abstract: The present invention provides a method and an apparatus of detecting a timing advance group change of a cell, wherein the method comprises: judging whether a timing advance value of at least one cell in the timing advance group is invalid; and determining that the timing advance group of the at least one cell changes based on the judgment that the timing advance value is invalid. According to the method and apparatus of the present invention, whether the timing advance group of the cell changes can be detected by judging whether the timing advance value of the cell is invalid, and after the timing advance group is detected to have changed, updating of the timing advance value and timing advance group of the cell in which the timing change happens is implemented.

Abstract: Embodiments of the present invention disclose a method and device for synchronization in base stations and user equipments. Specially, a method for synchronization in base stations is disclosed, which includes: dividing cells into one or more group(s) based on a predetermined rule, such that a Physical Random Access Channel (PRACH) procedure is performed with respect to a group from the one or more group(s) of cells, so as to acquire for a user equipment a Timing Advance (TA) for use in transmissions.

Abstract: A method of handover in earner aggregation scenario is proposed in the present invention. In an embodiment of the present invention, the following steps are comprised: a base station sends a handover command to a user equipment, wherein the handover command includes information for indicating a Pcell and a Scell requiring a timing advance different from said Pcell; the user equipment receives the handover command, and performs a random access on said Pcell and the Scell requiring a timing advance different from said Pcell; the base station sends information for indicating corresponding timing advance to said user equipment, according to a successful random access of said user equipment on said Pcell and the Scell requiring a timing advance different from said Pcell By means of the technical solution provided in the present invention, the Pcell and the Scell requiring different timing advance in carrier aggregation scenarios can fee supported.

Abstract: Embodiments provide a method for initializing a secondary cell in a cellular communication system. The method may comprise: receiving from a base station a Radio Resource Control RRC configuration request for the secondary cell to perform a RRC configuration; and in response to receiving the RRC configuration request, performing uplink synchronization with the base station in the secondary cell.

Abstract: The present invention proposes a method, in an eNB in wireless communication network based on carrier aggregation (CA) transmission, for controlling random access performed by UE, wherein the method comprises: determining whether the UE is out of UL sync on all cells, wherein the cells comprises Pcell and Scell: sending Physical Downlink Control Channel (PD-CCH) order signaling if the UE is out of UL sync on all the cells, wherein the PDCCH order signaling is used to indicating the UE to perform random access.

Abstract: The method includes determining which of one or more physical resource elements are to include a reference signal. The method includes generating a signaling message including information indicating the determined physical resource elements that are to include a reference signal, and transmitting the signaling message to user equipment.

Abstract: The invention proposes a method to support a handover of a service of a user equipment between a source eNB and a destination eNB in a wireless communication network with carrier aggregation, which includes the steps of: the destination eNB determining a primary component carrier jointly with the source eNB; transmitting a handover command to be transmitted to the user equipment to the source eNB, the handover command including indication information of the primary component carrier and dedicated preamble assignment information; the source eNB receiving the handover command to be transmitted to the user equipment from the destination eNB and forwarding the handover command to the user equipment; and then the user equipment accessing the destination eNB in response to the handover command. Also apparatuses performing the foregoing method in the source eNB, the destination eNB and the user equipment are proposed correspondingly.

Abstract: The present invention relates to a method for performing a random access procedure by a relay node operating in inband relaying mode in a wireless or radio communication network, comprising at least one base station adapted to communicate over a backhaul link with at least one relay node, said relay node being adapted to communicate over an access link with at least one user equipment, According to the present invention, the method comprises the steps of: —Configuring resources for said back-haul link and for said access link to be time-multiplexed at said relay node, —Sending messages of said random access procedure on resources configured for said backhaul link.

Abstract: The invention proposes a method and apparatus for a user equipment to decide by itself to measure an inactive downlink component carrier and a method and apparatus for a base station to control a user equipment to measure an inactive downlink component carrier. The invention further proposes a method and apparatus for a user equipment to request transmission of a sounding reference signal and a method and apparatus for a base station to control a user equipment to transmit a sounding reference signal. Both the user equipment and the base station are located in a wireless communication system based on carrier aggregation. The technical solutions of the invention can achieve a trade-off between low power consumption of the user equipment and the rapid and accurate response to the component carrier.

Abstract: A method of operating a cellular wireless network comprises broadcasting information about Internet Multimedia Subsystem (IMS) emergency call capability of the network on a broadcast channel in a cell of the network. This information may in one method concern the IMS emergency call capability of a base station included in the network and in another method it may include IMS emergency call capability of a base station and the core network.

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: 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 method is provided of transmission of a data frame from a first station to a second station, in a code division multiple access (CDMA) telecommunications network. The network operates according to a hierarchical series of protocol processes including a physical layer process under the control of a radio link control (RLC) process. An indication of when a data frame is passed to the physical layer process for transmission to the second station is sent to the RLC process in the first station. Upon receipt of the indication the RLC process, a timer is started to time a predetermined period before again passing the data frame to the physical layer process for retransmission to the second station unless an acknowledgement of receipt from the second station is received.

Abstract: A method of allocating a channelisation code to one of a plurality of user terminals for decoding of signals sent according to a code division multiple access scheme is provided. The plurality of user terminals being reserved the code for possible use. The method comprising selecting according to a predetermined rule the user terminal to which the code is to be allocated, and allocating the code to the selected user terminal, in which the plurality of user terminals having the code for possible use constitute a group, and there are multiple groups of terminals each having an associated unique code, a record is kept of which user terminals are in which group, and the user terminal to which the code is to be allocated is selected following inspection of the record to determine which user terminals are in the group associated with the code.

Abstract: In the method provided, test transmissions between the mobile user terminal and base station antennas are made, and the received test transmissions processed to determine respective signal path quality for each of the base station antennas. Upon the determined signal path quality exceeding a first predetermined threshold, but being less than a second predetermined threshold higher than the first predetermined threshold, the mobile user terminal is connected to the corresponding base station antenna by control channels but not data channels so as to be time synchronised. Upon the determined signal path quality exceeding the second predetermined threshold, the mobile user terminal is connected to the corresponding base station antenna by both control channels and data channels so as to be call connected.