Abstract: The present disclosure relates to a method performed in a network node with two or more transmission states for dynamically managing outer loop link adaptation instances for a wireless device. The method includes monitoring one or more variables, where each variable is either associated with an outer loop link adaptation instance or with a transmission state; and adapting the number of outer loop link adaptation instances based on the monitored one or more variables. The disclosure also relates to corresponding devices.

Abstract: The present invention relates to methods and apparatus for enabling an establishment of a connection between a wireless device and a core network via an access node of a standalone LTE RAN using an unlicensed frequency band. The method performed by the access node comprises transmitting a broadcast message in a cell served by the access node. The message indicates that the access node supports connectivity to at least one core network associated with another RAN than the standalone LTE RAN. The method also comprises receiving a request to attach from a wireless device in the cell, for establishing a secure connection for user data between the wireless device and a target core network via the access node. The method further comprises transmitting a request to a target core network node to establish the secure connection.

Abstract: The present disclosure relates to a method and device (10) for enabling downlink (DL) coordinated multipoint (CoMP) communication. In particular it relates to a method of enabling CoMP in legacy user equipments, i.e. devices that only measures and reports the channel quality of the link to its primary serving point.

Abstract: A method (40) of antenna array dynamic configuration for 3-Dimension beamforming in wireless network is provided, comprising: determining (41) dynamically a mapping pattern for transforming a physical antenna array into a virtual antenna array based on time-varying downlink or uplink baseband channel statistics, from a set of candidate mapping patterns; and configuring (42) the physical antenna array as different virtual antenna arrays according to the dynamically determined mapping pattern. The corresponding apparatus, antenna array and wireless base station system are also provided. These are used to improve radio transmission bandwidth communication efficiency.

Abstract: The present disclosure introduces allocation of resources to one or more UEs based on a determined allocation priority and/or allocation probability in, e.g., Time Division Duplex (TDD) based radio communication networks. The disclosed technology provides the ability for a subframe to be configured as a “flexible” subframe, which can be dynamically allocated as either a downlink subframe or an uplink subframe. For each “flexible” subframe, an allocation priority and/or allocation probability is determined and subsequent resource allocation to user equipments (UEs) can be based on the determined allocation priority and/or allocation probability. Hereby, it is made possible to reduce interference in, e.g., TDD based radio communication networks.

Abstract: The present disclosure generally relates to managing a radio access node cluster (4) comprising a plurality of radio access nodes (2). By determining connectivity metrics and comparing to predefined thresholds, a decision is taken if a radio access node (2) of the radio access node cluster (4) is to be detached from radio access node cluster (4) or if a neighboring radio access node (6) is to be added to the radio access node cluster (4). All radio access nodes belonging to the radio access node cluster (4) share a common cell identifier.

Abstract: The embodiments relate to a method and a controlling unit for resource allocation and joint transmission in a cellular communication network. The method includes allocating a first set of frequency resources for transmitting a first set of time slots of data in a subframe, from a first communication node to a User Equipment, UE, and allocating at least one second set of frequency resources for transmitting, at least one second set of time slots of data in the subframe, from at least one second communication node respectively to the UE. The first set of frequency resources is intersected with one of the at least one second set of frequency resources, and union of the first set of time slots of data and the at least one second set of time slots of data is equal to the subframe.

Abstract: The embodiments disclose a method and an Access Point (AP) for assigning a sounding resource in a Time Division Duplex (TDD) cellular network. The method obtains a channel information between a serving AP and a User Equipment (UE) served by the serving AP, determines whether to assign the sounding resource to the UE according to the predetermined assigning criteria based on the channel information, and makes the sounding resource assignment if it is determined to assign the sounding resource to the UE.

Abstract: The present invention discloses a radio resource adaptation method between UL and DL for two-way communications between a first communication device and a second communication device, comprising steps of: receiving, by the first communication device, fed-back information in an unused part of radio resource allocated to a second communication link (UL or DL) from the second communication device to the first communication device, the fed-back information enabling utilization efficiency enhancement of radio resource allocated to a first communication link (DL or UL) from the first communication device to the second communication device; and performing, by the first communication device, resource-efficient information transmission and/or retransmission on the radio resource of the first communication link, based on the received fed-back information. The present invention further provides associated wireless communication devices.

Abstract: Techniques are disclosed for synchronizing frequency among a cluster of coordinated transmission points cooperating in a coherent joint transmission. In some embodiments, one transmission point is set (510) as a reference transmission point for a group of coordinated transmission points. Each of one or more other transmission points in the group receives (530) a specified downlink reference signal from the reference transmission point, measures (540) its frequency offset relative to the reference point, and compensates (550) the frequency offset in baseband processing or by a radio adjustment. Which transmission point acts as the reference transmission point is statically defined, in some embodiments, or dynamically configured, in others. Likewise, which time-frequency resources are used for the reference signal may be statically defined or dynamically configured.

Abstract: The embodiments relate to a method and a base station (110) for interference management in a cellular network (100) employing Space-Division uplink (UL) downlink (DL) Duplexing (SDD). The base station (110) assigns a plurality of Remote Radio Units (RRU) as Tx RRUs operable to dedicatedly transmit downlink signals to a plurality of UEs and Rx RRUs operable to dedicatedly receive uplink signals from the plurality of UEs at the same frequency band and same time as the transmission of the Tx RRUs. The base station then suppresses the interference caused by simultaneous transmission on the same frequency band by using a Tx spatial beamforming weighting matrix and a Rx spatial beamforming weighting matrix. In addition, the base station may perform cross-talk cancellation on the residual interference contained in the received signals by using the knowledge of the downlink traffic data.

Abstract: A method and an apparatus for tracking a clock source are disclosed. The method includes determining a best clock source to be tracked by a device according to a best clock source tracked by a slave candidate port in the device and distributing the best clock source tracked by the device through a master candidate port in a master state. Through the embodiments of the present disclosure, the clock source selection of the device converges quickly. Moreover, because the slave candidate port is determined according to the network planning, the planning of the transport network is observed.

Abstract: A first radio network node (110) and a method therein for measuring interference as well as a second radio network node (120) and a method therein for enabling the first radio network node to measure interference are disclosed. The first radio network node (110) obtains (201) configuration information for indicating a designated subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node (120). The second radio network node (120) obtains (202) configuration information for configuring a designed subframe for transmission of a reference signal. The first radio network node (110) receives (205), in the designated subframe indicated by the configuration information, the reference signal transmitted by the second radio network node (120). The first radio network node (110) determines (206) a value of the interference based on the reference signal.

Abstract: A method for adaptive coordinated transmission in wireless communications includes: determining more than one transmitter for performing coordinated transmission, configuring one of the more than one transmitter to be a serving transmitter with others of the more than one transmitter being cooperating transmitters, and determining more than one receiver; determining, by a cooperating transmitter, a cooperation mode according to measured signal parameters of the more than one receiver after receiving a cooperation request from the serving transmitter, and providing the cooperation mode to the serving transmitter; generating, by each of the more than one transmitter, a transmit signal corresponding to the more than one receiver according to the cooperation mode determined, and transmitting the transmit signal to each of the more than one receiver.

Abstract: A method (40) of antenna array dynamic configuration for 3-Dimension beamforming in wireless network is provided, comprising: determining (41) dynamically a mapping pattern for transforming a physical antenna array into a virtual antenna array based on time-varying downlink or uplink baseband channel statistics, from a set of candidate mapping patterns; and configuring (42) the physical antenna array as different virtual antenna arrays according to the dynamically determined mapping pattern. The corresponding apparatus, antenna array and wireless base station system are also provided. These are used to improve radio transmission bandwidth communication efficiency.

Abstract: The present invention discloses a method for determining an uplink demodulation reference signal (DMRS), which includes: taking one of multiple transmit antennas in the uplink as a base transmit antenna, taking other transmit antennas as subordinating transmit antennas and setting a DMRS for the base transmit antenna; establishing DMRS subordinating relationships between the base transmit antenna and each of the subordinating transmit antennas; and setting a DMRS for each of the subordinating transmit antennas according to the DMRS of the base transmit antenna and the DMRS subordinating relationship between the base transmit antenna and each of the subordinating transmit antennas. The present invention also provides a user equipment (UE) and an uplink system for providing DMRSs for multiple transmit antennas. The method, UE and system are applicable in both SU-MIMO transmission and MU-MIMO transmission.

Abstract: A system and a method of time information synchronization as well as related apparatuses are disclosed to improve precision of frequency synchronization or time synchronization. The application port subsystem in the information synchronization system is configured to: generate at least one local clock according to a locally running real-time clock, and provide the local clock for a core subsystem; and the core subsystem is configured to: select a best system clock according to attributes of the clock provided by the application port subsystem, and send the best system clock to the application port subsystem, where: the application port subsystem calibrates the real-time clock according to the best system clock provided by the core subsystem in order to perform frequency synchronization and/or time synchronization. The embodiments of the present invention improve the precision of frequency synchronization or time synchronization effectively.

Abstract: The present invention disclosed a method constructing an intelligent system processing uncertain causal relationship information. It can express, monitor and analyze the causal logic relationship among the different variables in complex systems directly, implicitly or in both way of them under the circumstance of unsure, dynamic, having a logic loop, lacking of statistical data, unclear evidence, mixture of discrete and continuous variables, incomplete knowledge, multi-resource of knowledge. It gave effective bases to solve the problems in the domain of production, monitoring, detection, diagnosis, prediction, et al.

Abstract: A method of clock transmission between networks and an apparatus of clock transmission are disclosed, in which a second group of information corresponding to a clock transferred by a first network equipment based on a first protocol, and the second group of information corresponding to a clock transferred by a second network equipment based on a second protocol are acquired, and a source selection is performed in a united way by adopting a source selection manner based on the second protocol according to the second group of information. Therefore, the equipment in different types of networks can conveniently select a clock with a higher class from clocks transferred based on different protocols, so as to realize a normalization management on the clocks transferred based on different protocols.

Abstract: An intraluminal stent, an intraluminal stent delivery system, and a method of manufacturing an intraluminal stent. The stent comprises a body and at least one pad operably attached to the stent body. The pad includes at least one therapeutic agent disposed thereon. The delivery system comprises a catheter and the stent disposed on the catheter. The manufacturing method includes providing a stent including a body, and at least one pad. The pad is operably attached to the stent body. The pad is treated with at least one therapeutic agent.