Nokia Corporation

Wireless Future Technologies, Inc.

Nokia Solutions and Networks Oy

Broadcom Corporation

Nokia Siemens Networks Oy

Cellular Communications Equipment LLC

Nokia Technologies Oy

Hai Ming Wang

Jing Han

Erlin Zeng

Bernhard Raaf

Chun Yan Gao

Peng Chen

Xiangguang Che

Gilles Charbit

Xiang Guang Che

Da Jie Jiang

Yuan Zhu

Samuli Heikki Turtinen

Timo Koskela

Sami-Jukka Hakola

Qianxi Lu

Esa Mikael Malkamaki

Simone Redana

Jussi Kustaa Ojala

Tao Peng

Esa Juhani Tuomaala

Shaoyi Xu

IGilles Charbit

In accordance with an example embodiment of the present invention, a method comprises allocating a control channel resource in a wireless relay transmission frame on a wireless relay link; generating a control signaling based on at least one of a resource allocation scheme, a status of the wireless relay link and a traffic condition of the wireless relay link; mapping the control signaling to the allocated control channel resource via at least one of a time-first mapping, a frequency-first mapping, and a multiplexing mapping; and transmitting the control signaling in the allocated control channel resource on the wireless relay link to at least one associated relay node.

Control signaling for wireless communication

An apparatus including at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform: determining for a group of symbols at least one candidate transmission symbol position, wherein the group of symbols include a first symbol position part for backhaul downlink symbol positions and a second symbol position part including the at least one candidate transmission symbol position; and generating at least one further backhaul downlink symbol for the at least one candidate transmission symbol position.

Resource allocation scheme for a relay backhaul link

Transmitting physical signals precoded at the physical layer, and transmitting via a physical channel precoded at the physical layer decoding information for use in physical layer decoding of said physical signals; wherein said decoding information is incorporated into one or more data units at a layer higher than the physical layer. Transmitting in a single sub-frame one or more physical reference signals for use in physical layer decoding of a physical channel in a plurality of sub-frames.

Method and apparatus for transmitting physical signals

A method includes receiving information relating to interference between a relay node associated with a first base station and at least one other relay node associated with a second base station. The method also includes initiating modifying transmitting parameters of the relay node and/or the at least one other relay node on the basis of the information.

Method and apparatus for reducing interference

A communication link is provided between a station of an access system and a relay node. The relay node is a node capable of wirelessly communicating with at least one communication device within the coverage thereof. A set up procedure for the communication link is initiated such that the relay node acts as a communication device towards the station, the set up procedure being initiated according to a set up procedure between the station and communication devices accessing the station directly. Communication between the relay node and at least one communication device within the coverage area thereof are handled such that the relay nodes acts as a station of an access system towards said at least one communication device.

Relaying in a communication system

There is transmitted to a user equipment UE in a first subframe of a radio frame a downlink shared channel DSCH according to a first relay-transmission mode (e.g., mode A or A' in the examples); then switch to a second relay-transmission mode (e.g., mode C or C&#x2032; in the examples) within the radio frame based on a channel quality of the DSCH. After switching, then transmit to the UE, in a subsequent subframe of the radio frame, the DSCH according to the second relay-transmission mode. In this embodiment the HARQ process is synchronous and non-adaptive for mode C: the eNB re-transmits packets to the UE in a predetermined fashion to be concurrent with transmission of those same packets from the relay node, as scheduled by the eNB. In this embodiment the eNB receives the UE's NACK for the data that is to be retransmitted via relay through the relay node.

Adaptive transmission modes for transparent relay

The specification and drawings present a method, apparatus and software related product (e.g., a computer readable memory) for improving device discovery and D2D operation, e.g., in LTE wireless systems, by using control signaling provided by a wireless network (e.g., by an eNB). The discovery channel/channels which conveys discovery signal/signals are configured by a network (e.g., by the eNB) and are mapped to control channel/channels (e.g., one-to-one). After sending/receiving the discovery signal/signals, the D2D devices are monitoring control channel/channels to get current information for establishing the D2D communication among these D2D devices, the current information may include a resource allocation for the D2D communication and a device list of candidates for establishing the D2D communication.

Device-to-device discovery and operation

Methods and apparatuses for transmitting downlink control signaling on wireless relay link

In accordance with exemplary embodiments of the invention there is a method and apparatus to detect with a hybrid automatic repeat request function a collision between an uplink packet re-transmission and a new uplink packet transmission within a hybrid automatic repeat request process, and in response, to dynamically allocating resources for transmitting the new uplink packet transmission in a different hybrid automatic repeat request process that does not collide with the uplink packet re-transmission. In accordance with other exemplary embodiments of the invention, there is a method and apparatus to transmit a packet re-transmission in a hybrid automatic repeat request process using a semi-persistently scheduled uplink resource, and responsive to receiving a dynamic allocation of a different hybrid automatic repeat request process, to transmit a new packet using the dynamically allocated different hybrid automatic repeat request process.

User specific load balancing

Systems and methods for determining the periodicity for a multiple periodicity SPS allocation using implicit rules for a TDD communications system are disclosed. A communication terminal such as a UE is provided that may determine the periodicity for a multiple periodicity SPS allocation using implicit rules to calculate a delta value to form a long time period and a shorter time period, forming a periodic pattern where the rules depend on the TDD configuration being used. In another embodiment a communication terminal such as a UE is provided that may determine the periodicity for a multiple periodicity SPS allocation using implicit rules to calculate a delta value to form a long time period and a shorter time period forming a periodic pattern, where the rules depend on the TDD configuration being used and the HARQ process being used.

Configuration of multi-periodicity semi-persistent scheduling for time division duplex operation in a packet-based wireless communication system

In accordance with an example embodiment of the present invention, a method is disclosed that comprises collecting a set of neighbor cellular user equipment (UE) interferences from at least one neighbor cellular UE at a device-to-device (D2D) UE at least in part based on a decoded first uplink radio resource management (RRM) message and computing a first set of average neighbor UE interferences based on the set of collected neighbor cellular UE interferences. The method also comprises predicting at least one interference scenario at least in part based on the first set of average neighbor cellular UE interferences and a decoded second uplink RRM message. The method also comprises selecting a resource for data transmission to a pairing D2D UE at least in part based on the first set of average neighbor cellular UE interferences, and transmitting data over the selected resource to the pairing D2D UE.

Apparatus and method for interference avoidance in mixed device-to-device and cellular environment

Methods and apparatus operative in a wireless communications system divide a communications resource available for performing information transmission and retransmission operations into a plurality of communication resource units. The units are ordered in a predetermined order. A first group of communication resource units are selected from the communication resource in ascending order and assigned to a first group of communications devices to perform information transmission operations in a first time period. A second group of communication resource units are selected from the communication resource in descending order and assigned to a second group of communications devices to perform information transmission operations in a second time period. At least a portion of the first group of communication resource units is assigned to the first group of communication resource units to perform retransmission operations. In operation often the first group of communication resource units will be available to perform retransmission operations in the second time period. In such a manner a non-adaptive HARQ retransmissions can be accommodated in a 3GPP LTE OFDM based wireless communications system.

Growing community of inventors

Beijing, China

Hai Ming Wang