Abstract:
Certain embodiments relate to wireless communication systems, such as long term evolution advanced (LTE-A), which may be part of third generation partnership project (3GPP) LTE release 12 (Rel-12). More specifically, certain embodiments may provide an arrangement related to new carrier type for time division long term evolution (TD-LTE), which may also be related to Enhanced Interference Management and Traffic Adaptation. According to certain embodiments, a method can include determining that a split configuration is to be followed, in which at least one system information block configured up-link subframe is reconfigured as a new carrier type downlink subframe, whereas at least one other system information block configured subframe is as indicated by system information block configuration. The method can also include applying the determined split configuration to communications with an access point.
Abstract:
A method includes receiving initial acknowledgement resource information at a user device from a base station. The initial acknowledgement resource information is associated with a subset of acknowledgement resources. The method includes determining in dependence on the initial acknowledgement resource information which of the subset of acknowledgement resources is to be used. The user device transmits an acknowledgement on the determined resource.
Abstract:
Various communication systems may benefit from multiplexing schemes. For example, various wireless communication systems may benefit from a block-IFDMA multiplexing scheme with a flexible payload. A method can include determining whether a first type of uplink signal or a second type of uplink signal is to be processed for transmission on an interlace. The method can also include determining whether to apply spreading based on intra-symbol spreading codes, inter-symbol spreading codes, or both intra-symbol spreading codes and inter-symbol spreading codes, based on the determination of whether the first type of uplink signal or the second type of uplink signal is to be processed for transmission. The method can further include causing transmission of the determined at least one of the first type of uplink signal and the second type of uplink signal according to the determination regarding applying spreading.
Abstract:
A method comprises defining (401), in a network node (e NB), scheduled downlink carriers from a list of configured downlink carriers. The network node (e NB) defines (401) a downlink assignment index of the scheduled carrier having at least the lowest carrier index from the list of configured carriers, based on a total number of scheduled carriers. The network node (e NB) defines (401) the downlink assignment index for each other scheduled carrier having a higher carrier index from the list of configured carriers. The network node (e NB) transmits (402) to a terminal device (UE) a control message corresponding to each scheduled carrier, the control message indicating a downlink assignment scheduling a physical downlink shared channel, and comprising the defined downlink assignment index. The network node (e NB) receives (405) from the terminal device (UE), uplink control signalling indicating HARQ-ACKs related to physical downlink shared channels corresponding to the scheduled carriers.
Abstract:
A method comprising: receiving an uplink grant at a user equipment, the uplink grant comprising information; using the information to determine uplink subframe scheduling for a hybrid automatic repeat request procedure over a plurality of subframes; using the information to determine, for each transmission of the hybrid automatic repeat request procedure, whether to retransmit previously transmitted data or to transmit new data; and using the information to determine a modulation and coding scheme and a redundancy version for each transmission of the hybrid automatic repeat request procedure, in dependence on the determination of whether to retransmit previously transmitted data or to transmit new data; and the information received at the user equipment comprising information of at least one parameter which is common to each transmission of the hybrid automatic repeat request.
Abstract:
Apparatuses and methods for providing layered mobility are provided. Small cell eNBs belong to a cluster of local area base stations. A source eNB has a connection with user equipment having a first identity related to the connection and receives from the user equipment a request to send a scheduling request to another local area eNB of the cluster, the request including a list of target candidate eNBs. The source eNB determines suitable target eNB(s) from the list and resources for sending a scheduling request; and transmits The target eNB receives a scheduling request from user equipment allocates and sends communication resources to the user equipment and associates the first identity to the connection with the user equipment.
Abstract:
There are provided measures for reference configuration for flexible time division duplexing. Such measures exemplarily include obtaining a first configuration parameter and a second configuration parameter, determining an uplink reference configuration for a flexible uplink/downlink mode from said first configuration parameter, determining a downlink reference configuration for said flexible uplink/downlink mode from said second configuration parameter, and deriving an uplink/downlink configuration candidate set based on at least one of said first configuration parameter and said second configuration parameter.
Abstract:
The disclosure relates to subframe bundling in a system where subframe bundling is based on a set of bundling definitions. Control information is provided for at least one communication device configured to provide subframe bundling such that the control information is generated to be at least partially inconsistent with the set of bundling definitions. The control information is signaled to the at least one communication device to adjust the state of subframe bundling and/or size of subframe bundled transmission in accordance with a predefined rule by the at least one communication device. When the device receives the information, is determines that received control information is inconsistent with the set of bundling definitions. In response to the determination, the device can adjust the state of subframe bundling and/or size of subframe bundled transmission.
Abstract:
Improved adaptation to a frequency band comprising sub-bands is provided by receiving a coding rate of an error correction coding scheme for encoding modulation symbols to be transmitted on sub-bands of a frequency band in radio communications, determining relative radio channel qualities of the sub-bands of the frequency band, and allocating transmission power between the sub-bands at least on the basis of the relative radio channel qualities of the sub-bands and the received coding rate.
Abstract:
Various communication systems may benefit from appropriate handling of uplink communications. For example, certain wireless communication systems may benefit from an uplink coverage extension for unlicensed band operation. A method can include configuring a first interlace having a first starting physical resource block. The method can also include configuring a second interlace having a second starting physical resource block offset from the first physical resource block. The method can further include transmitting or receiving a signal based on a combination of the first interlace and the second interlace. The combination can include at least one cluster but less than two clusters in each measurement interval.